Wild Foamy, I don't see any power stats on those servos, but you want something that is equivelant to the Hitec HS-55 minimum. Using that heavy engine is ok, but the battery may or may not go up front. When using a light Cox, the 270mah Nicd goes up front with a one ounce tank. Depending on your battery location and the tank dimensions, you may have a problem fitting everything. Don't worry though. A one ounce would still give good flight times.

You guys call a shopping cart a trolley?!