I had a 70 Surpass on mine, and it was more than enough. The Saito 72 will be just fine, although a Saito 91 would do well since it is just a tad heavier than the 72, and give you a bit more power if you wanted it.

A buddy put a Saito 91 on his, and clipped one rib bay out of each side of the wing. It improved the roll rate and didn't have any negative effect on the flying qualities.

Built stock, it is a big *****cat. I trained two people how to fly with mine before I murdered it on the dreaded downwind turn after a flame-out...[&o]

Steve