ORIGINAL: MikeRuth
I put an OS .25LA Blue in a Model Tech Mini Magic Extra 300 and it's a blast. I only had to put my battery pack behind the LE of the wing to bring it into balance. I used a 5 cell 1100 Mah NI_MH pack. Everything else is in the stock location. This plane is very close in size and weight as the one you describe. 900 X 900 and 1100Grams.
Most of the time I fly about half thortle, but point it up and power up it is unlimited in the vertical. What a hot Rod.
Only catch is I am using the stock tank, and that baby drinks up the fuel, so 6 minuets is about it.
I stuck an OS .46LA in a Model Tech 300 which calls for a .25.
I had the engine, and was looking for a plane to install it to, other than a trainer.
The OS .46LA is about the same weight as the .25 so it fits the plane well.