Uber hard wheel in the front, with lots of urethane so it doesn't wear down fast because of sliders is what I would like. so probably 110 mm. and 98mm 14 spoke, hot glued, in the back.
Low pros are so smooth, 110's. I mean WOW i flew over 3 ft out of the 12ft with no pads barely pumping and it felt so smooth. Get some lo-pro 110's youll get lots of air out of the quarters to practice with.