I'd put a Mintor 33 on it. In that airframe the engine is going to be visible and you need eye candy.
Its also shorter than many of the others, including the DLE 30.
I have the Mintor 55 and can assure you that the motors are works of art! And the price is close, too $300 vs $325 for the DLE vs Mintor.
At least thats how I'd look at it.