That's a great way to ruin a new ABC-type engine. Blubbering rich 4-cycling with a 2-stroke prevents the engine from reaching it's proper operating temperature quickly enough, and because of the nature of the piston fit puts tremendous stress on the engine causing premature wear and possible failure. Nice advice.

Deadeye, follow Saito's break-in instructions. Don't worry about having 10% more displacement than the kit recommends. That engine will suit the plane just fine, and you'll enjoy the heck out of the combo.