I have a Saito 125 on mine and it is plenty of power. Balancxed and flies great with no more than 1.5 ounces of lead on the engine mount.
Was flying it Sunday and noticed the left wing tip was slightly fluttering, just as I pulled up into a snap roll. At it came out of the roll, the left lower wing seperated and appeared to be held on only by the servo wire and the cabanes. I leveled off, and it did not appear to want to stop flying so I throttled back, used rudder to make a shallow turn and headed for the runway. Landed with no problem. The flutter had been induced by the cabane attachment screw on the bottom getting slightly loose. The flutter caused the wing holddown screw inside to vibrate lose and it pulled completely off the alumnum rod. Lucky to save it, but nothing was hurt. Put a new screw in, tightened the caban screw down and flew it again. The planes flies and looks great. Gets small really quickly though so pay attention.
I love it.