That sounds fine. You'll just be removing a little extra flashing on the torso sections so you can get a feel for the plastic. I'd say knock out arms before legs though. And remember, measure everything a few times before cutting. Make sure it fits before you cut also! If you need room, you can always give more space but try to do so in the rear. If you have any questions, that's what we are here for. You can PM me as well if needed.