I flew this plane for a year with an OS 46 FX, 11X6 APC prop, and it was a great combination. It is a vey "slippery" design, goes fast with not a lot of power required. It will go vertical for any maneuver you want to do. It has retracts and tends to tip forward if you are not careful in ground handling. It does NOT need a big, heavy engine to spoil it's good flight characteristics and make it more nose heavy. I used full throttle only for vertical, most flying was done at about 60% throttle.

Do yourself a favor and do not load this fine model down with excessive power and weight. Your Super Tigre G51 is probably too much engine, but of the three you show, it is by far the best choice.

Enjoy this fine airplane.