Cutler found ways to train smarter and still build a shit-ton of mass. Then again with the extreme amount of drugs they take, they probably don't need to train too heavy. I'd venture to say Ronnie probably didn't even need to train as heavy as he did to get that big, for him it was more genetics, drug use and the overall volume of his workouts, but not necessarily the amount of weight he used per set. His genetics test show he carries the ACTN-3 gene, which gives all sorts of athletic and physique advantages... As far as delts, with your background I'd be shocked if your delts arent big already. For volume on OHP I'd say 3 sets of 8-10 reps and for side and rear delt raises 3 sets of 12-15 each. A fourth set might be pushing it depending on your genetics, but probably would offer additional mass if you can properly recover from it.