I'm looking to buy a track bike for velodrome racing. I ride a 58cm cervelo right now with this geometry. Saddle height from the center of the bottom bracket is 80.5cm, the tip of my saddle is 6-7cm behind the center of the bottom bracket, 175mm cranks, and I have a 110mm -6 stem on it with one 7mm spacer under it.
What specs should I be looking for in a true track bike?
Should the top tube be roughly the same length?
I assume I'll need 170mm cranks?
Do I need a 56 or a 58cm bike?