Thanks for the replies. I asked this question b/c there is not much left in the tank after squats, dl's, pc's, or snatches. My workouts were looking like this:
6x6 big compound lift four/week
5x10 horizontal push twice/week
5x10 horizontal pull chest twice/week
5x10 vertical push twice/week
5x10 vertical pull twice/week
4x9 biceps once/week
4x9 triceps once/week
2x12 hams twice/week
3x12 core four/week
The volume feels like too much for 4x/week. I'd rather add a day, than cut direct hamstring work if the big lifts aren't going to be adequate for my hamstrings. If adding a day still feels like too much, I'll trim the volume somewhere.
I feel like a kid in a toy store when I am planning a workout. I want to do everything, but then reality sets in!