I'd suggest a few things.
1. Train your lower body twice a week. 48% of your muscle mass resides below the belly button, upon countless other benefits to placing equal emphasis on lower body compared to uppper body.
2. Perform an equal number pulling to pushing exercises. This means if you have two push days (chest and shoulders) you should have two push days (rows and pull up based).
3. Maybe try a simple linear periodization schedule. Start in sarcoplasmic hypertrophy with reps around 12-15 with 1 minute rest for 2 weeks. 3 weeks in the 7-10 range with 2 min rest, 3 weeks in the 3-5 range with 3+ min rest.
4. Keep the same main movements for the cycle, but alter your ancillary movements (arm work, isolation work, stabilizor/fixator work, core work) every 2-3 weeks. Next 8 week mesocycle, choose a different set of core exercises (like front squats in place of back squats, etc.)
Br