Short update, I have done everything that I feasibly can without being a professional. The crank shaft, pie plate, pedals and all will have to stay on because despite having the right tools the cottered crank bolt got slightly mushroomed and is not coming off. This is the video I was referencing:
Hopefully tomorrow it will be sandblasted. Hopefully I don't disappoint too many of y'all in repainting it, but I plan to keep the exact same color scheme and get new decals. Definitely no longer going to powdercoat, I like the intricasies of the frame too much.

I'll post some pictures when she's nekked.

Quick question, in attempting to remove the fork today I took the bearings out, then put them back in. Is there a certain type of oil or lubricant I should be using each time? I'm going to replace them once the bike has been sandblasted, so I have time to order something.

Thanks for all the help so far