Thinking of adding a Hammer Blue Hammer for dry conditions and possibly as a spare ball and a Cyborg for medium heavy conditions to my Impulse which is pretty good for medium-medium light. Thoughts on this 3 ball arsenal? Have I got the basics covered?

BTW, I am a medium speed 14-15mph at the pins, 200-250 revs, and pap 5 7/16R/1 5/16up. Stroker who prefers to play up 8-9-10.

Hard to recommend urethane for dry sometimes because if the heads are really fried, good luck. You would most likely prefer a reactive ball designed for light oil.