OK first what is everyones "best guess " of how fast their Wonder flies flat out ? 60 MPH ? More ?

Im putting in a MDS .18 but I only have one servo right now, a Expert SL300 which will probably go on elevator. What servos do you all recommend for ailerons ? I was thinking a HS-225MG ?
Would I do better to put some kind of mini servos for ele & ail ?
Guess I'll go with a HS-55 for throttle.

What are your suggestions ?

Thanks,
John