Hi,
why a wizard and not just plain old MDI?
Lower the bit to the depth of cut you require at the start of the cut,
G1 Xnnn Ymmm Fppp where nnn,mmm are the cords of the required end point at federate of ppp,
withdraw the cutter above the work, job done. Need to allow for diameter of your routing bit of course
but that calc shouldn't even require a calculator.
Craig