If the port is cut on the rear baffle, how far away will the speaker need to be from the wall. Due to the Tower's size, I'd like to be able to place the speaker as close to the wall as possible. Feedback from owners of "stock" Towers?

If the port is cut on the front, would it be a problem if it's cut in mid-baffle (approx 6" below woofer)? I'd want the option to put things in front of the speakers.

thanks,
gar.