I would agree, stick witht the basics.
Chest....db press, inlcine press and fly
shoulders.....db press, lateral raises, rear lateral raises and front lateral raises, shrugs
Back.......wide grip lat pulls, db rows
legs.....squat, leg press, straight leg deadlfits, leg curls
Bis,tris.....careful here. I think you would almost be in danger of overtraining them working them two days a week, even though one day they are secondary in your back/chest workout. When I find myself overtraining them I am usually going heavy, so I switch to light weight, really light weight and focus on the contraction and they start growing again, and I workout them out twice a week. One day is back bis, another is chest tris, then I work bis and tris together on a seperate day. Just use lightweight and they will grow.