I do similar, 4 days per week:
1. Chest /Triceps
2. Back / Biceps
3. Legs / Shoulders
4. Triceps / Traps / Forearms / Neck
(I like doing close grip bench for strength twice in a week, hence the extra tricep day).
3 exercises each, 4 sets. Reps is what I feel like doing that day (low: 3 to 5 reps, high: 6 to 10 reps).
Cardio on off days, try to do abs after each weight workout. Once this gets old, I change things around for a while, but this is my staple/fall back..