I wouldn't say more power if you use both outside options. But it will be faster, and because of this you might have more power, since it will lift you more if it is faster.
I heard if you chance the front it will be less forces outside and more inside. And the back will turn faster outside and inside slower. So in strong winds you use the inner setups and less wind the outside to fly it more up and down.
Complicated, isn't it? At least to explain...