OP, have you already taken a look at this template:
I like it a lot because you can keep your strength progressions with the main lift and still get a good pump afterwards. I only replaced DB flyes with cable flyes because they give me better peak contraction.
What also dramatically changed my pecs and shoulders was the Powerlook Program by CT:
However, it really fried my CNS with all the overload exercises by the late stage of the program, so I wasn’t able to hit new 1RMs at the end. I’d still do it again just to see my pecs and delts grow again.
For some reason, I can’t steer myself away from doing a push and pull together on upper body days. It feels great, and it gives me enough time to rest the opposite muscle and keep myself moving.
I think I just need to really commit to a program, follow the progression on the main lifts, and do assistance that is going to count. Adding too much volume will probably only negatively impact my quest to new muscle gainZ, haha.
I’m looking into educating myself a little more. I’ve heard of these two ebooks recently released, Muscle and Strength Training and Nutrition Pyramids by Eric Helms. I’ve heard good things about them so far, so I may give them a read.