I do weighted dips 48 hrs after benching, and it's working great. My shoulders always felt burnt out when doing them in the same work out as the bench. Just added 1 arm db presses and inc. presses. I'll probably add the 1 arm db press on (narrow) bench day, and 1 arm inclined db presses on dip day.
I'd also like to add I'm getting strange looks strapping 70# onto my weight belt and doing dips. Anybody else go to a gym where you're the only one who does weighted dips? I talked to a guy that was anxious to hit the 300# bench; when I talked to him about weighted dips, he almost laughed and said,"I weigh 240#, I don't need to add any weight." I didn't have the heart to tell him how much I was dipping with.