Sprink, with the servos down the back I would say you want the battery up front.
Surprised about elevator throw... shouldnt be a problem getting more...Ive got about 80degrees on mine at full deflection !
glad you like it... its a whole new ball game isnt it... I was kinda getting mored with the 3D Fun fly stuff because chucking it around is all you cant do... the C50 gives you the 3D bit AND some smooth aero stuff too..

Looking forward to the pics..Glad you like the model !