Congrats!
The X5 is an amazing camera 
I shared some thoughts on the X5 camera in this post when I first got mine, which may be of use/interest mate.
For the airframe, there is no difference at all between the v2 and the Pro. A v1 model however will have the 350kv motors, rather than the 420kv of the v2 (more tech details over in this thread).