bigger wheels
about airplane attitude on ground
an airplane that sit nose down, will want to stick on the runway on take off because of the wing negative angle off attack. As the speed increase, the plane is push down harder on the runway. A lot of elevator will be requird for rotation . but once the rotation is acomplish, the plane will pop quiclkly off the ground and jump into the air at hig angle.
On the other hand, if the model sit nose Hig on the ground, take off will be smoother , but landing will be more bouncy if the nose wheel touch first...
the best alternative for a beginer in my opinion, is to have the plane level or at a slightly nose down attitude....
hope this help