RE: Lanier F-4 Phantom
I actually have no idea...What prop. you gonna run on the 61FX? Maybe you can run a 10x10 or somethign for speed-
The F-4 is kinda fat actually- It lands hot with my YS-45 which is lighter than your 61 so keep up the speed on landing and leave room for a nice roll-out!
I have no idea about the speed- but it WILL be faster than any Dragon-Lady!
Keep us posted-
james