I agree with Alan on the foregiveness. However, 12ft is pretty high up, so you might experiment on leaving them level or slightly angled. I found with my 9ft ceilings it sounded a bit better slightly angled downward.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85