What am I reading?
Please say that you're doing more than that in your sessions.
Problems:
1) No warm up sets - Warm up sets on the BP? What should i do? Drop the weight down and do as many reps as i can as a warm up?
2) 20 second rests! - Too long or not long enough?
3) No pulling movements - I use the multi gym for pulling exercise
4) No leg exercises - I work my legs wednesday for about 40 minutes, then before i go home i normally jump on the bench.
5) Three times a week - i thought that was the average?
I would say that you're sending your shoulders to an early grave with benching 3x a week with no pulling movements, but actually you're barely doing any work with what is basically one big set.
Are you using a smith? Are you going down to touch your chest?