Daytona Yellow
#4
I would on a piece of scrap lexan spray the yellow and then back it with Competition Orange and see what it looks like. Or maybe try Red to get a orange-ish hint. Daytona yellow will look more like the corvette than a school bus.
#5
Tamiya has a Camel yellow, perfect
#7
When it comes to painting I would not hesitate one bit to take Kent beal's advice. Guy has painted numerous bodies for me and is an excellent painter and knows his stuff
#9
I use yellow in a lot of my paint schemes. the bright yellow would be your best bet, but try backing it with red. it will help 'orange' it up abit.