Use Microloading on the bench and eventually on the press. Start out with 10 pound jumps on the squats, deads and PC's and then eventually 5. When you stall on the bench and OH just deload 10% and don't worry about it. I am thinking that you will be surprised that you will get stronger on those two lifts.
My OPINION is that you should stick to the five exercises and leave the other stuff out for now, untill you become and advanced novice or intermediate. I grew 1" on my arms without direct arm work.
Let us know how it goes.