Hi Madflurry,
Welcome to F3F group.
As far as I know, none of the F3F usual player have this plane. We do not know how thick of the wings for installing the flap servo. You better measure the thickness before buying the servos.
Secondly, I would suggest you to use digital servos instead of analogue.
Thirdly, the gear in 125MG (or 5125MG) is not tough enough, and would break easily even in soft landing. Better use other choice if the space allows.
I had used 225MG before. I felt that they were slow.
Since the model is in cross-tail design, 85MG seems to be too weak in torque for a large elevator.
Hope above could help.
Pong