Thanks, for your help guys,
I will go for a saito 72 or os70 ultimate.
I think that the 91 will be a little heavy for that plane even if it has more power for unlimited vertical.
Has any one done the dual aileron modification ? Is it nessesary ? I would like to see some pics if possible.
How about installing rudder and elevator servos at the back of the fuse for better balancing ?

Thanks.
Will post some pics of building soon,

Thanos.