Of you are going to do 4 days a week training I would split your week into 2 lower body days and 2 upper body days. I do not recomend splitting chest and back into different days.
When any of my athletes are in a density phase I have them do something like the following:
Day 1: Clean, Back Squat (density), RDL's, Lunges, core work
Day 2: D.B. Swings, Bench w/row, pushups w/face pulls, arm combo, core work
Day 3: Snatch, Power shrugs, Front squat, good mornings, core work
Day 4: D.B. Swings, 1 arm press-n-row, overhead press w/chins, arm combo, core work
The sets and reps vary all the time. Basically on the Oly. lifts 5-10sets 1-3 reps. Bench and RDL's 3-6 sets 3-12 reps. The rest 3-5 sets 5-12 reps.
Hope this helps out.
P.S. Tough for an O.U. guy to say but, Go Hawks!!!