RE: flatouts suck
22m-1000 draws 12amps wot static from a 3 cell lipo on an apc 9x3.8 slowflyer prop. it hovers a 15oz plane with ease. For pure 3d you'll probably want to stay under 12oz. The flatout should be much lighter than that, wich would mean you'll want to use a small, light pack and a smaller diameter prop, maybe an 8x4 slowflyer.
That motor is actually pretty versatile, what kind of esc and pack (make, cell count and mah rating please) are you using? that kinda dictates what you can use it in. By altering prop diameter and pitch you can select a variety of different props for applications ranging from 7oz to 17oz depending on flying style (forget 3d at 17oz)