Tony, I've been watching your build, been subscribed for some time. Outstanding fish.
MHO on the question - too much red. I think you need to have some black inside to really make the red "pop", black carpet, visors, dash, console, column etc, will make the red seats, door panels, etc. really that much more appreciable. But, that's MHO. I'm sure whatever you do will be terrific.
Keep the pictures coming.