I make EzFlys out of ReadiBoard, both paper on and paper off. Single layer everywhere except the wing's leading edge will be double layer with the KFm, and the nose will be triple layer with the two nose doublers.
For a stronger, faster flying EzFly - I leave the paper on and scotch tape over all the edges. But the exposed paper will be susceptible to moisture.
For a very lightweight slow and floaty EzFly , I cut out all the parts and then peel the paper off. I also use lightweight electronics and increase the wingspan to 40" for very light wing loading.
His Slow and Floaty model:
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