The 7' spacing between the speakers is fine. Also, you need to be at 8' or more from the speakers for a proper listening position.
I have owned these speakers with a pair of 2Wq subs for some years now. They are truly a wonderful speaker but will not impress if not set up correctly. IMO, I would look for something that could be placed closer to the wall.
However, they do come with an excellent manual on placement and tilt back. You may luck out and find a position that would work somewhat but I don't think you will ever get them to sound their best.