Welcome to MAB. You have a very solid foundation there. I too started with bodybuilding style split training, and have moved on to Strongman training.
The first piece of advice I can give you is to drop the small joint isolation and machine work in favour of heavier exercises that work the same muscles.
For instance, instead of triceps extensions I'd recommend dips. And if you do any wrist curls/calf raises etc, drop them too; they don't assist in building functional strength.