Yep... use your preouts for front left and right to the amp. You will need a couple of RCA to 1/4" adapters... pro amps generally only take 1/4" or XLR inputs. Or you could get you a couple of RCA to 1/4" TR cables. You can probably order those from the
Guitar Center if you order the amp from there, which is probably going to be your cheapest find for that amp.
You should be fine running only the one center at 4 ohms with the surrounds.