Sawed off the extra material, deburred and drilled up the holes, and suddenly the windshield was finished. With the airward kit the windshield and the glareshield is now detachable. This will help in case of any modifications later.
I was a bit fast riveting on the firewall windshield strip. Drill out all the rivets and installed screw and nuts (from Airward). Also trimmed the windshield, only the aft bow left, and all the holes.