I had one of these paper-plane conversion kits a year or so back: it lasted exactly 15 seconds before breaking in the hands of my kids. The push-prop configuration simply doesn't provide enough power and stability for the kinds of planes that get made.
So I think this is a better investment, personally, for anyone wanting to get into small/light FPV flying:
This is one of the most entertaining kickstarter videos I've seen. I like the blend of specific technical information and just plain fun; I want a paper airplane drone that makes me feel like a lion riding a t-rex.
So I think this is a better investment, personally, for anyone wanting to get into small/light FPV flying:
http://www.parkzone.com/Products/Default.aspx?ProdID=EFLU660...
While you can easily replace a paper-airplane with new parts/designs, etc. the Vapor will simply fly better.