John’s three rules
1 If it isn’t running it isn’t a good starting point for a project. You always have the option of just walking away.
Stick to your budget. Being retired I had time to do things myself so that kept expenditure down. I’ve spent £2.5k on top of the base bike.
Don’t touch the paint until you’ve given it time to dry properly. No, really don’t touch the paint until it’s cured.