74 power wagon dream truck...

I'm going to paint the floor with a satin white industrial rustoleum mixed with acetone with my cheap Harbor Freight sprayer and my cheap Harbor Freight compressor. Also going to do the bottom that way. Of course the top side will be covered in a generic dynomat and the bottom will be easily touched up...
Want to take it in for a light body work and the actual paint of the exterior and upper interior I think it's going to be a Spinnaker White from a 74.. kind of an off-white...
That sounds like a plan, no need to do expensive paint on the floor and underside of the cab.
Buy good paint for the exterior, I made the mistake once by painting my 71 D-100 with cheap paint, I had to constantly wax it to keep it shining.
Before you shoot the exterior I would upgrade to a better compressor, something around 3 hp 20 gal tank is enough to spray with.
Make sure it is a belt driven one, the one I am using I bought at tractor supply ~ $350, plumbed and extra 30 gallon tank with it so plenty of reserve to paint with.
Just make sure you plumb in a good water catch.