I chose the Bill Starr program because it was designed with athletes in mind, I'm not ONLY interested in strength; I'm also a kickboxer and jiu-jitsu practitioner, and having monstrous legs/ass can be detrimental to my performance.
Could you guys recommend another program? Would WS4SB be a better fit potentially?
"Designed with athletes in mind" is a farce unless the idea is it gives you more recovery time.
Big legs/ass will not hurt your performance unless you think stronger kicks, more strength in general, being harder to take down and being basically un-sweep-able "hurts your performance". Strong is strong.