DD tail setup help, please.
 

I've read about burnt motors and read about dual motors and ducted fan setups, but decided to go with the DD. I want to go with a BL setup (so far ive planned razor V2, 2 Phx 10 esc's, and 3 cell lipo).

Can someone recommend me a motor and prop size. I came up with a Feigao brushless motor and 3x3 prop blades so far. Any help or advice will be appreciated, thanks.