The FX series would be much better.

Keep in mind that there can be a serious over heating problems with a pusher (rear) engine. You cannot run the engine on the ground with the pusher prop or the engine will over heat in short order.

If you need to get the engine set up (needles adjusted) on the ground, put a tractor prop on the engine to break it in or get it adjusted.

Once you start it with a pusher prop, you must take off immediately.

Good luck,

Jim