I'm 8'8" from mine atm in a 12' wide room. I have mixed feelings about being this close. On one hand they still sound great, on the other I can't shake the memory of them at 12' and 14' away.
Better to have an ht than not...
I've tried with and without port plugs, I like aspects of both.
At the moment mine are a foot off the floor and well off the front wall. Tweeter center to center 8'4 1/4".