Maybe the OP can simply keep the rack where must be due to cost and wires and simply move the speakers to accommodate it. When Sumiko demonstrated gear at audio shows they were stuck with horrible hotel rooms. The Master Set method of speaker placement places the speakers where they sound best regardless of or in spite of what's in the room. Racks, furniture, TV or washer/dryer, you can do it. There is no formula that reliably predicts the exact placement. The speakers will not be in an exact equilateral but with patience, will sound their best. Play the room. Try it.