KI pads, extra gloves for those looking to try out a class or two before joining.
Stocking a limited version of a pro-shop is probably a good idea. Handwraps, mouthguards, gloves, shin pads, headgear, supplements.
Oh yeah, dont forget a vending machine stocked with gatorade or other sports drinks.
Good luck on the endeavor. Way cool. Where are you located?