Although the Kavalier is not quick to get airborne when it lifts its wheels it speeds up quickly. It requires less engine to go fast than the sticks but more to get airborne. Like a kaos it flys much like a pattern ship with a long tail moment and symetrical wing. This high speed capability will make flutter more likely. Watch your hinge gaps and don't enlarge your surfaces. Use gapless hinges if possible.
If you fly off grass go for the larger engine and prop it for medium speed. You will have plenty of speed in the air but you might appreciate the shorter takeoffs.