Welcome To the “Bolt”! I also strongly encourage you to get it safe and reliable then drive it a while before you even think about any body work, paint or improvements. You next steps will be evident.
As far as insurance, I have my truck registered as Historic and that enables me to get special collector’s car insurance. I have collision and comp and its less that $200 a year. It does have restrictions. I can only drive it to events, parades and the occasional pleasure ride.
You can do the same when your working on it to get it reliable then switch over to regular plates if you want it as a daily driver. That strategy will save you a bit of money!
Mind you, it may take a year or more to get your truck to that point. Most anything you touch on these old trucks is a can of worms. The more you look, the more you find. Allot of the time I have spent is is waiting on parts.
We’re here to help you along your journey and all you have to do is ask! Good Luck!