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.