Probably a question that's been asked a thousand times on here but.............

I'm getting close to sending a composite super bandit off to paint. It's getting a sport scheme but I'd like to add panel lines. I'm planning on sending it to paint getting it back to add the panels and any additional graphics then having clear coat added.

What do you guys use?
Guessing promark could be a good route to go down?
Best results from lines of rivets or solid lines?

Any help appreciated - haven't done anything like this before!

Andrew