Foodstick on the four I have done over the years, the first back in the sixties I just used generic trainer wings and what ever degree of washout that may have existed. They all became very aerobatically inclined trainers however that were a joy to fly. Never have understood the resistance to this simple kit bash. There is however one draw back and that is it is more difficult to maintain orientation at first until one becomes more used to the unusual visual configuration so suggest keeping close on first flight even though it is a trainer.

And indeed what is pointed out above by buzzard bait, this is not for a mid or a low wing airplane. If this is done to a low wing the stability will diverge away from that neutral ideal.

A low wing always needs a small amount of dihedral or dihedral effect from airfoil taper and wing tip design. A mid wing needs no anhedral or dihedral, a midwing airplane is the only configuration that is already near that totally neutral ideal. Perhaps maybe that's that's why all the many great flying sport aerobats are midwings

Here are some random photos during the bash of this last one with the hacksaw (the trainer is a Midwest Aerostar trainer mostly stock except the wing.

John