7.1 Surround with 4 rear speakers

[jsteinhauer]

Is there an appropriate way to do this? Aside from a few pieces of trimwork, we have pretty much finished up the half basement redo for the HT, and as I look at it now, I don't like the position of my right and left (side) surround speaker, but I can't do much about the wiring at this point. It would be no issue to install side surrounds in better locations, but it leaves then 4 rear positions that I would hate to have to go to waste. I use a Sony STRDA5300ES. Can I make the rear signals go to two lefts and two rights without any audio weirdness?