Deadlifts and Pull ups

I am late once again. Monday's wod was a tough one. I thought I would rock out the pullups, but they proved to kill me. The Workout:

For time:
225 pound Deadlift, 15 reps (I did 185 lbs)
50 Pull-ups
225 pound Deadift, 12 reps
40 Pull-ups
225 pound Deadlift, 9 reps
30 Pull-ups
225 pound Deadlift, 6 reps
20 Pull-ups
225 pound Deadlift, 3 reps
10 Pull-ups

Time: 12:56

This was about a minute longer than I wanted. My unrealistic goal was 10 min. My realistic goal was 12 min. My forearms were the main problem. My legs were pretty strong, but I had trouble holding on to the bar after so many reps. Something else to work on.