if you are just concerned with how much weight you can put up i would make sure that your delts are getting stronger (especially the front delts). make sure you are doing db presses or front bar presses, laterals, etc.... guys who have big benches always have big delts. if you want chest development as well do db presses heavy (5-6 reps), always try to increase pounds even if it's for 2 or 3 reps.