It is great to read about combos, and what they produce. Torque, and where it is, combined with how the curve is shaped, mean everything in a motor plan. In the end, that is what will produce the usable hp you are shooting for.
An example; My motor leaves the line at 6600 rpm, stays at 6600 for 2/3 of each gear. Probably would be a good idea to favor max torque production right there. So I want to know every thing I can about what will make best torque there.