Check list

Not really. Use studs Don't use studs. Reuse the original bolts but chase it with a die. I'm like wtf. If just figuring out the right bolts is this difficult than maybe I should give up

It's simple.

You can reuse the stock bolts if they're in good condition. Clean them up before reusing them though. Forget about the studs. Personally I would just buy new bolts since they're cheap.

Don't give up though. Perseverance is important with old cars. They will give you problems and kick you while you're down but don't give up. Every time you come across a problem, learn from it and keep moving forward. I was pretty discouraged when my 318 wiped a cam after 2,000 miles. What did I do about it? Used it as an opportunity to build something better.

Problems are to be expected with these old beasts. How you handle those problems is what's important.