Can You Make It to 15? Workout

Weighted Ring Dips - 5
Weighted Pullups - 5
3 rounds

then..

25 swings and 25 slamball every 2.5 minutes. 15 rounds cap.

*You pick the weights and must stay with it throughout the course of the workout. Every 2.5 minutes a new round begins. The faster you complete the 25/25 the more rest you get before the next round. When/if you can't complete the reps within the given 2.5 minutes the workout is over. 15 round cap. Can you make it to 15?