I dont have much knowledge on edf jets but it seems that you are trying to fit a too big of a fan on this jet.. My suggestion is to find a plane combo that already comes with a nice, 12 blade unit that provides a nice, jet like sound with a motor and esc, and avoid experimenting combinations that can be expensive, ruining batteries.

I am sure that the electric jet guys can chime in, however in this forum most guys fly gas powered turbines.