Amen.
I have never seen a rattle can job that looked good. Sure most can make them look good in pictures but in person up close they look terrible. It's one thing to paint a front valance or smaller pieces with rattle can paint but to do a whole car and have it uniform without a TON of work and lots of cans.
I guess it depends on what you are after in a final product. I can already picture in my head how this is going to turn out. You going to remove everything and prep right? What about door seams, trunk, and engine bay? There is a reason a full color swap is very expensive.
Good luck. You have a very massive amount of work ahead of you if you are going to make this look remotely decent with that kind of paint.