Here is my more refined scematic. We got a package in that happened to have a foam insert i needed so i have gotten this done today. with styrofoam i will be able to lift it with tinier balloons to save on helium for now. This model will be for weight testing and its motor will be one way forward motion. the deck plate and the bridge/cabin will be balsa wood or basswood depending on what will lift better. its propeller is made of beechwood, offering lighter weight and steadier at higher rpms.