Based on your reasoning for why you want track geometry, I would encourage you to hold off on a new frame until you have a better understanding of how a bike's measurements interact with how you are positioned on the bike to determine it's ride characteristics. Sprinting has more to do with handlebar and cockpit setup than geometry, and has nothing to do with seat tube angle since you should be sprinting off your saddle in a serious sprint. And you want stability in a sprint, not twitchyness as that would be disastrous. Get some bullhorns or track drops that suit you, get your stem length dialed in, then sprint your ass off. If you can't feel what is wrong with your ergonomics on the bike, then you don't know enough to make a sensible decision on a new frame's measurements