Hi,
I built this kit, and painted it on Jet Black, and enjoyed it very much so. It was a great kit to build, and check out out sig for the build pic's - might give you some ideas..
Your build looks to be motoring on.. Like the idea of the "cough" special all wether undercoating.. Ha..!!
Paint the trim flat black.. It makes it look better up close..!! I did, glad I did. Good luck on this, I'm working on my forth right now, a Merc SLK. You should see my garage walls.. I tested TS17 with TS13 on them, looks a little brighter on there now..!!