Have you gotten an estimate yet on your 'all-over paint'? The less expensive paint with the car still assembled and have it look terrible or the proper remove everything, paint and reinstall? You yanking the drivetrain to paint engine compartment or are you going to leave mis-matched.
I'd say, unless your car is way modded or special to you in some way, it'd be better just to go but another car already the color you like.