Kart racing to street stock

Hey y’all my names Michael. Just created this account to find out some more information about switching from kart racing to a street stock. A little about me I’m a firefighter and a small business owner in north Florida. I come from a racing family my grandfather raced dirt back in the 70’s and 80’s and my dad raced asphalt modifieds and super late models from the early 90’s to the mid 2000’s. I started racing karts last December. I ended up finishing second in points in one class and in another class finished 6th in points. In my 10 months of kart racing I’ve learned it can be a big pain in the a**. Having the right tires at the right time is a huge struggle especially when we’re racing against teams that have a late model budget. We’re possibly look at transitioning to street stocks. And just want to learn as much as I can before making the move and I’m looking for the experienced guys to guide me in the right direction. Questions I have are

How long will a set of tires last?
How long will a motor be strong for before it needs a refresh?
What extra parts should I have on hand?
Are shocks spec or do you bolt on whatever you want?
Hidden costs?
What would you do differently?
How much money would be reasonable to spend considering only racing 2-3 times a month?
Are there different classes for a street stock such as a crate motor or a motor built within class rules?

I’m sure there’s 100’s of other questions out there that I can’t think of. I definitely appreciate everyone’s thought and suggestions.