If it's working, generally follow the adage "if it ain't broke, don't fix it." Roids help recovery and endurance.
If you want to use a couple of workouts to try less sets and compare results, use higher intensity on the remaining sets:
-3 sets on bench and pec deck, then reduce the other chest sets.
Either:
-Leave out either declines or inclines each workout, substitute the missed exercise for the other the next workout for 3 sets ie inclines one workout, declines the next. Total 9 sets for chest.
Or:
-Do do only 2 sets of inclines, 2 of declines, 3 each of regular bench and deck, total 10 sets. 2 sets will work if max. intensity's applied, and if needed, if regular benches are done first to pre-exhaust.