Pick one main lift that you have had great luck with building mass. Alot of people pick Incline presses or some kind of dumbell pressing movement. Then superset a few lifts that help build mass in the desired areas, for powerlifting I would suggest putting mass around the joints (shoulders, elbows, knees, waist). So you could do two supersets, one could be an overhead press with a tricep isolation, the other could be a chin-up variation with a bicep isolation. Repeat that a few times with other movements, and you're set.
RE Steep incline dumbell presses:4x10
A1) Standing dumbbell military press:4x8
A2) Decline Skull Crusher:4x8
B2) Dumbell flies:4x8
C1) Pull-up variation/lat pulldown:4x8
C2) Barbell Bicep Curl:4x8
D1) Cable row:3x12
D2) Hammer curls:3x12
Yeah it looks like alot of volume, but most of the weight is too light to hamper the CNS on your ME days. This method will hurt but it will build size.