I want to see how much my clutch pedal travel should be. Are my calculations correct?

clutch disc to flywheel gap: 0.050"
release levers on clutch ratio (long style): 4.8:1
clutch fork ratio: 2:1
ratio between 3/4" master and 7/8" slave: 1.37:1 (calculations are correct as you have to compare the area and not the diameter)
pedal ratio: 6:1

Multiplying 0.050 * 4.8 * 2 * 1.37 * 6 gives me a pedal travel of just under 4 inch (3.95"). That doesn't seem to be a lot..or are my calculations wrong?

how much clearance should be between each part?