Twostroker,

The new YS 110 should make that cap 232 ballistic. It is a little pricey but is sure does perform. It has the same size case as the YS 91 but it is punched out to a 110. This would be my choice. On this cap 232 pay great attention to the weight. Dont over build. You will probably have to use spoileron to get a good stable harrier and elevator. Waterfalls would be easier using a mix that would deflect the ailerons the opposite of the elevator like flaps. Do not forget to set some expo on the tail surfaces to damping the response in the center. Also good high torque servos would be a plus too.