I use a hitec X4 but its just 4x B6 chargers. I would just get a regular B6 charger there are a ton of clones out there. I have a turnigy B6 that has worked since I started in electric, its been great. I would avoid the imax. Get one with a fan for sure.
Xtreme chassis are very pretty. Post some pics when it comes in.
Which servo did you get for your storm? The stock one is pretty minimal but you don't need much for the storm.