Tear down for new project hitting some speed bumps.

I’ve torn down and refurbished 5 vintage bikes this year, and who knows how many over the years, but I’ve neber had one fight me like this one.
It has been reduced down and cleaned up as best as can be done at this point.
A couple of the obstacles: the chainrings can’t be removed without removing the entire crankset. One of the bolts is wedged right under the crank arm. I’ve never run into this before.
I wanted to replace the worn incorrect rubber pedals with proper rat-traps, but one of them is frozen solid to the crank. Even a break over bar won’t budge it.
The frame shims crumbled for both brakes when the brake sets were removed.
The pulleys for the rear derailleur crumbled when the chain was removed. Okay, I’ll just replace them. But one of them is frozen to the cage. I can’t quite see how it’s stuck in there. May not be serviceable.
Okay, I’ll just replace the whole derailleur. Guess what? It’s frozen the the dropout. Bolt won’t budge no matter how much force I put on it.
There’s virtually no rust on this bike, so I’m starting to wonder if the person that assembled it was drunk and cross threaded most of it? ;)
I hate to give up, but I think I’m going to let a shop do the rest of the work.
Any advice or even encouragement would be greatly appreciated. :)