CrossFit Open WOD 13.5 Workout

4 minute AMRAP to get to 90 reps/ 3 completed rounds of:
15 x 100 lb Thrusters
15 Chest to Bar pullups
repeat until either the 4 minutes is up or you have completed the 3 rounds or 90 reps.
Then if you get all 90 reps, continue on for another 4 mintues so on and so on until you can't complete the next 90 reps within the 4 minute window.
I did it and got: 68 reps.
I rested too much between movements. I should have taken a little bit of a break and just broken up the sets a little better. Felt o.k. and after about 25 minutes I was starting to not be too bothered with my next... still nagging injury but I don't think it really effected this workout.
Post WOD:
I did Annie in about 5:30.. my abs were really sore adn taxed.