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I've been doing this stuff for 32 years + and every scenario is different. You just need to get in there and see what works. Colors, shapes, ambient, your lighting, they will all influence the end result. I think you are on the right track with the headliner bounce, you'll know quickly if it will work.
Those are the kinds of assignments that have you staring at the ceiling in the middle of the night dreaming up techniques. Good luck!