To get the fan to fit you need to open up the recess a little so that it fits flat without a step to the inlet, other than the extra servo for the second side of the elevator everything else fits OK from the Habu, but have you seen the "Centry UK" Vortex, have a look on their web site, DW is flying it and seems quite pleased with it.

I hand launch like a discus launch glider from the wing tip at full power without the turn, just hold the wing by the tip and rotate it up and level, its very easy.

Mike