No reason to buy anything, most clubs or instructors have everything needed to learn to fly. I don't think you should even think about getting these two planes set up until long after solo. By then you will not have to ask anyone what to do or what engines. At the very least you will have a good idea. Just asking such basic questions it's clear you would make a lot of mistakes and want to make costely changes before you fly them. Better to just put them away and cool your jets.I'm a 60 size trainer guy myself. If you have to buy and set one up then in the end you will have a good broken in engine you know and trust for the Pitts.