Hi folks, I have been lifting for about two years now. I am currently bulking and followed Steve Shaw's 4 Day Max Mass routine for about 4-5 months now. It was chest/tris, legs, back/bis, and shoulders, but for the past few weeks I haven't noticed much change or progression so I believe that it would be a good time to mix things up and break this plateau. I am looking for some feedback on my routine and would also be willing to consider recommendations for official programs out there. I intentionally left out squats and deadlifts due to my herniated back. Thank you all!

Monday
Quads & Hamstrings:
Leg Press 3 x 8-12
Leg Press 3 x 15-20
DB Lunge 3 x 8-12
Leg Extension 3 x 8-12
Romanian Deadlift 3 x 8-12
Leg Curl 3 x 8-12

Tuesday
Chest & Biceps:
Bench Press 3 x 8-12
Incline DB Press 3 x 8-12
High - low cable fly 3 x 8-12
Cable fly 3 x 8-12
Incline DB Curls 3 x 8-12
Preacher DB Curl 3 x 8-12
Hammer Curls 3 x 8-12

Thursday
Shoulders & Triceps:
DB Press 3 x 8-12
Arnold Press 3 x 8-12
Leaning Cable Lateral Raise 3 x 8-12
Bent over high raise 3 x 8-12
DB Skull Crusher 3 x 8-12
Rope Tricep Extension 3 x 8-12
Tricep kickbacks 3 x 8-12

Sunday
Back & Calves:
BB Row 3 x 8-12
Single Arm DB Row 3 x 8-12
Lat Pulldown 3 x 8-12
Seated Cable Row 3 x 8-12
Calf Raises 3 x 8-12