If you can only top out at 265 for 4 Id suggest starting lighter.
I pre-exhaust with pec deck then start my pressing. But this is how my workout went recently.
Incline BB press
bar - few 'sets' of 5 reps
135 - a few 'sets' of 4,5,6 reps whatever
185 - 1 set 12 reps
225 - 1 set 12 reps
245 - 1 set 10 reps (1 maybe 2 reps in the tank)
260 - 1 set 8 reps
245 for 10 and 260 for 8 were difficult to accmplish. Needed a spotter on the last rep of the last set. All the other sets I left reps in the tank.
Flat dumbell press
no warm up sets. No need to warm at this point, doing so is just wasted energy.
started with the 90s and worked up to the 110s for 8 reps. 3-4 sets.
then did my finisher, which happened to be more pec deck that day.
Rest periods should be significantly shorter between the early sets compared to the last ones. There may have been 10 seconds of rest between the bar sets and the 135 sets.
I didnt mean "only top out at 265" as an insult btw. May have come across that way, but this is the bodybuilding forum, I dont really care at all about numbers.