Had a gig in a cocktail bar that liked to get rowdy with a DJ later. My PA cab and amp went on top of their massive overkill 2x18 sub and my little sub went on the other side in the other corner. No wukin' furries.
Point being subs like being up against walls and particularly in corners. Then they run really low power as the boundary reinforcement gets free dB.
Just put your subs to one side or the other and be far enough from the rear wall that you don't have a gnarly 1/4 wavelength cancellation. At 14ft out you get another reinforcement at 80hz which is the breadbasket of your kickdrum.
One side of the room will be more bassy than than the other but not enough that anyone consciously notices.