hbfp v2

I'm planning on getting the new 1. 11.1 v batt 2.4ghz tx. It is sweet. Where can i get spare batteries other than e-sky. kind of expensive. Not sure which ones will fit. How high can i go on the mha rating? Will the metal blade holder adapt to the stock head or do i need to get the whole set up? I didnt see anything on your upgrades as where to and what size brushless motors to get.

I got an Xtreme 11.1 850mhz from Boomtown Hobbies last week. Pretty close to the stock battery dimensions.