34"-36" is pretty standard height. I'm 5'10" and the leading edge of my CP (including 1" casters) is 34", and the CP inclines at 15o. This height seems perfect for me, but you might want to use 36" if you're 6'. Basically, divide your height in half, or center the front of the CP at ,er , crotch level.
Anyway, best thing to do is actually go to an arcade with a tape measure, find a game that is comfortable to play, and measure that. Also consider who else will be playing (my wife is about 5'2" and sometimes feels the controls are a little high.)
Good luck.