Kinda nice, isn't it? When you first get a project and it seems overwhelming.
My father's advice? Do not look at it as a whole; consider it a bunch a parts that make up sub assemblies. A bunch of sub assemblies make up the whole thing. Pick something, tear it apart, fix it. Put it on the shelf.
One day there are no more assemblies to fix/restore or paint.
Now it is time to take them and start bolting together.
Whenever I get into a project I try to do a little each day. Even if it is indirect work, such as reading up on the manual, picking up parts etc.
One day it will all come together.
Keep up the great work!