[Chase743]

I would not duplicate them like that, unless you're going for a very specific effect. It probably won't sound natural.

My suggestion, and it is hard to say without listening, is to pan your room mic in one direction and the OH in the other. You have to use your ears to find the right %s.

Also, try sending the close mics to a stereo 'verb. That'll open up the sound a bit too.