This was my first kit build too. I had an OS .40 LA in it and it wasn't enough engine. A .46 LA would have been better. Any of the ball bearing .46 sized engines would be good to. Make sure you build the "sport" wing especially if you make it 4 channel. Trainer wing would be okay without ailerons, I suppose. The kit comes with parts for either wing including the wing joiners. The manual "strongly recommends" building the trainer (A) wing. Don't do it! The plane is just hard to fly with THAT much dihedral. Doesn't want to turn with ailerons. I ended up building another wing with (much) less dihedral and it was great after that

It's a good sturdy airplane that will withstand a lot of abuse.