I would work in order of priority. What do you need most or rather most often.
Food + water every day. 3 times!
Lights and heat every night.

I would cover these basics before worrying much about the rest.

If you want to enjoy the greatest variety of foods that might become prohibitively expensive in the future then any and all means of preserving foods would be high on the list. Maybe add dehydration to your plans.
This is a way to have all the food you grew anytime for free - then there's the other free foods - fishing, harvesting game, foraging.
The "for free" part is really important - that's what frees up income for other things that are difficult or impossible to make on your own.

I suppose it depends how far back in time you want to go when you plan for the rest of your life.
We're already well into the age of electricity and the more sophisticated electronics. I don't plan to live without the convenience of electricity.
If you were to buy solar panels it costs a lot to have someone figure out and install the related systems -charge controllers, inverters, battery storage, low and high voltage systems. Do it yourself for about half of the off the shelf cost. You can easily get more sophisticated by making your own tracker for $100 instead of a manufactured one for $500.

If not the solar route (rather inefficient) how else could you produce your own power? If you have a good location with running water you could do some kind of micro-hydro. (the best option)
Probably the simplest route is the time proven(used during WW2) of wood gasification. If it could run a car or truck back then with simple technology it could certainly run a generator.
If you have natural gas available that is also a very reliable fuel source.

Thank you for that. I have been looking over the years on how to build my own dynamos, how solar energy works, bike generators, wind generators. So far I have found nothing that would work well enough for me at my present location at the moment. I am in the process of gutting my house as well as having to re-do the yard & decking.

I have one of those very large batteries that will run a single large appliance for a few days that if need be I can use for my fish tanks. I have heard rumors that I can get something off the grid for the tanks but have not been able to find anything yet.

gunsmithing.....important skill i hold and should be very valuble if the SHTF....even basic gunsmithing, more armouring (replacing broken parts and cleaning)

Carbon04 this is most likely a dumb question but isn't gun smithing based on what type of gun you have? I don't own a gun.

I do own a bullet mold 😳

nope, im a gunsmith, qualified. can work most firearms even ones ive never worked on before. they've not really changed over the past 100 years and there are only several types of gun, pump, bolt, semi-automatic, lever, etc. however, the firearms i personally own, take my glock for instance...i know it back to front, (its only my weapon of choice because i carry one at work as well)...i can however strip it down in no time whatsoever to its basic parts and with the exception of the barrel and receiver i have replacement parts for everyone of those 34 parts. thats being an armourer and ANYONE can do that...places like Brownells sell spare everything, and theres a couple of older rifles i have that i went and bought seconds for the spare parts...just learn whatever firearm you have...i have over 10,000 schematics on file (PDF) and will happily send you the one for whatever gun you choose...

Some guns are more complex than others and more suited to a time when gunsmiths and parts are available but almost all are pretty robust and will last a lifetime with the most basic maintenance. My father had a lever action Winchester made before 1900, fired regularly if not frequently with never a problem. I wish I still had it.
Simple guns will give you many years of service with nothing beyond regular cleaning. I'm sure more game has fallen to single shot bolt action and break action rifles/shotguns than any other. The old saying goes "if you need more than one shot, you're not doing it right".
Some guns are so common there will always be parts to be had.

I think I need to do some research on gun types. I have a mini metal lathe so I would think I should be able to duplicate some parts if needed as long as I had the right type of metal.

dern, now that has me thinking about prepping metals

You can get a copy of of the hunting regulations and or take the course. Ministry of Natural Resources. Also check out this link. A little graphic for some. http://www.vdpam.iastate.edu/HumaneEuthanasia/Ex.htm . It shows human euthinasia for domestic animals.
Cheers.

I think I need to do some research on gun types. I have a mini metal lathe so I would think I should be able to duplicate some parts if needed as long as I had the right type of metal.

dern, now that has me thinking about prepping metals

you'd need a mini 'mill' not a lathe...a lathe will do some firing pins and pins. problem with making your own parts (especially when it comes to the trigger mechanism) the metal needs to be hardened in a vacum furnace or it will wear down. you can either replace the part periodically or just take the risk that it might go off when you don't want it too.

Of all the firearms I have there's only one that's ever broken a part, extractor claw on a single shot .22. Easy fix if I searched for the part. But it's an oddball gun I never use.
I've run a few thousand rounds through both a .22 semi auto and an M14 in the last year, not a single issue with either. Watched a dozen guys do the same with no failures. They just don't break that often.
Of course I keep them fairly well maintained, clean and properly lubed.

my hubby kept the mill and the brake 😥

I got the antique hand benders, a crimper, punches, cutters....basically the smaller stuff

you know what....ready back over these post, ive given pretty bad advice here....don't gunsmith yourself, armouring a firearm fine, but gunsmithing ...no! sooner or later if your playing around at fixing firearms with no experience you will have a 'violent disassembly'. this could result in you having to pick pieces of mental from your face for six weeks.

with hindsight perfessors spot on....firearms very rarly fail unless their dirty when shot, not oiled properly or mistreated

Thank you all for your input. I think learning about guns is next on my skills list to learn.

I read on one site about sling shots and that got me thinking about blow dart guns. lol

Oldschool, consider a crossbow.
Shoots like a gun, a lot less skill needed than traditional archery, not dependent on physical strength, perfectly capable of taking all sizes of game out to 50 yards once you practice a bit. Maybe 30 yards till you get good.
I'll be getting proficient this year, mostly because the gun season for deer is one week, for archery it's 3 months. Oct 1 to Dec 31.

AND, no gun license needed. You would still have to take the Hunter Ed course to buy your deer or small game tag.