First of all I want to comment on your room, very nice! I love your table and bar stools, where did you get them?

I don't think you will have any issues.. I have 4 Qs8's and they are mounted around 7ft up as well and they work fine. Just make sure you leave some room for the top driver to breath a little bit.

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