I truly beleive there are no duds, it all depends on how much work you want to put into it. These days with powerful mini servos and light LiFe batteries you can easily save a pound of weight compared to what was available when that airplane was new. I would also suggest you study up on biplane wing incidences ( models not full scale ), I personally have all mine set with the top wing at zero and bottom wing at +1 degree. This makes the bottom wing stall first and improves inverted performance. Also CG is critical on short coupled bipes. Too far forward is almost as bad as too far back, don't fall for the wives tale that forward is better on a CE, it don't like it.