the champ is pretty hard to crash. its a nice easy setup.
edit: if your dead set in using the glider airframe, ttry this:
make the plane, then you fly it and try to crash it. seriously. i did this once on to a design i was working with, and after going 2 ch and larger wings with short throws on the rudder, i could never crash it. best i could do was force a hard landing. of couse this was in no wind
its best to assume a newbie will try to crash, they (we?) all fly like that!