Take a look at this Herr kit: http://sigmfg.com (click on aircraft/kits/scale)

The 1/2A Cub is meant for small glow engines but it could likely be converted to electric. At 20 ounces or so, your motors should fly it great.

Another option, if you don't mind an ARF, might be the World Models electric Cub: http://airborne-models.com/html/prod...p?ProductID=59. Your 450 should still fly it pretty scale if the advertised weight is close to correct.