just from holding prop in the approximate location with gear on...looks like you should be able to go with a 14 in. prop and use the stock wheels....if not just do away with the wheel pants and go with a little larger wheel.....i will not use the pants anyway i have never been able to keep them on a plane this size at our field.....but it is mentioned several times in the manual to not over-power this plane...actually it's the speed that will rip it apart.....and what is the deal with the flying wires....they are not showed on one pic of this plane.... not sure if i will put them on or not.....this plane is designed for just "flipping" around in one small area