Newf is 100% correct, train your back just as hard as you train your chest. And don't forget about your rotator cuff, could get an impinging join.. Anyways, to bench press more, bench press! I've heard 5x5 is good.. I usually do 8-10 sets 12, 10, 6, 4, 4, 4, 3, 2, 1, 1.. This is just me though. I only do this on my power exercises, deads, squats, presses, etc..