...just sayin', if you got a pro to rebuild your engine, or wire your avionics, why not at least pay one of the reputable shops $100 to come up with a few pencil sketches for you?
We are all students of design, but sometimes it's hard to know why one looks better than another. For instance, the previous ship looks awesome, but I wonder that the red stripe on the fuselage is thick at the back, and tapers to a constant 2" or whatever all the way to the nose.
On the wing, the red stripe is a uniform 2". Would it look better if it was thinner at the front, and flared a bit toward the tip? Probably.
my point, you're taking all this time and money to design, and mask, and paint, don't limit yourself.
Lots' of guys seem to paint the 2 main colours, and then use vinyl striping as the break. In this case, if you go tired of the stripe colour, you could change the look of the whole design by re-striping it.