aiming
i agree with king go 14/6 for the ucando
with the magic i wouldnt put a 60 on it..i have the magic xtra...i have a 46 magnum with a macs one piece muffler,running the 12.25x3.75...on take off i roll no more than 20 feet and i climb vertically until my neck is tweaked..i hover this aircraft at 1/2 throttle..to put a 60 on it would require some major engineering..you may be up for that. if i had to guess what to prop to run with a 60 it would be 13x5-13x7...somewhere in ther would be good for 3d flying...good luck