about 6 to 8 light coats of spray tint to make a really even surface and then 3 to 4 light coats of clearcoat. about an hour and a half of a job (without settling time) should be fine. I sprayed mine and waited a month, washed it four times, and then realized it was coming off and then clearcoated it and now it's all messed up if you get close to it and take a look. so do both processes on the same day.

i notice you have dual kicker subs. what kind do you have? what kind of headunit are you running? (mine are S15L5's with stock headunit)