The one I just finished is a float plane, the CG Cub. The owner bought the fiberglass specialty's glass cowl, very cool, built in engine on one side, all molded in. He also bought the one piece LG. It's heavy but it isn't going to bend or break on rough landings. I built this plane with two servos for the elevator and ailerons. I used the knock outs on the bottom to make hatches in the fuse for these servos plus the servo for the rudder. I installed a pull/pull system. The owner didn't have a .70 FS so he had me install the OS .91FS. Way over kill but it's what he had on hand. By installing everything behind the CG I was able to get the plane CGed and it's just a little nose heavy. When he adds the floats he should be able to get the CG nutral.
After the pilgrim mentioned the built up ailerons I flashed on that, he is correct. The main thing I noticed was the wing though, the CG wing is really over engineered and strong as a any I have seen. The wing isn't going to break unless it is a total crash, it's stiff as a board. The build on the CG Cub isn't really hard, there is just more work to it and it takes longer. The CG is a much stronger plane. I did make some mods because of the engine used and it being a float plane.