Doug,
Welcome to the fold. You are a fortunate fellow to have a close family. Sorry to hear about your Gradmother, I know how I felt when I lost mine.
You have a very worthy project ahead of you, and been entrusted with a great honor. There are lots of old brains around here to pick for tricks and tips. You’ll thank yourself years from now when you make the decision to restore the car correctly today. Maybe one of the first things you want to do is before starting restoration is have a TAC (Tiger Authentication Certificate) done on the car. It will give you documentation of what you have started with, and the TAC inspectors always like seeing original cars!
https://www.teae.org/cars/how-do-i-know-my-tiger-is-real/
Safe travels over Labor Day.