Unfortunately, I think You have to use a paint clear over the graphics. Or, use single stage paint that doesn't need clear, that would be the best, if possible. I don't think any PC clear has a low enough cure temp to be safe with paint
I am painting another RC car body this weekend, it has some rips in it, I'll try to get some closeup shot's next week for ya. But, my odies are also done on the inside(clear lexan) so the painting procedure is reverse. That get's tricky sometimes. Shadows have to be done first.