| you should work your whole body and make strength gains in squat and deadlift.
i am getting big gains by incorporating military press 1 time a week(wed) and dips 1 time a week(fri), benching 2 times a week(mon,fri)
the most significant exercises leading to gains in my bench was increase in squat and deadlift.
ALSO:
how do you bench press?
DO you just lay down, and get the bar and push?
or do you use the powerlifting form for bench, where you arch your back, push on your traps and use your legs for stabilization?
if you get the hang of the powerlifting bench, i bet you can add 20lbs to your bench right off the bat. it really made a differance in my bench weight.
check the technique sticky for an article on bench. | 
