Winter transmission builds

If you’re already set up for the glide, no sense in going to the 727 in my opinion especially in a light car. If the car was heavy and you wanted to leave harder that’s a different story. But I wouldn’t change it in your case.
you hit the nail on the head. The Arrow launches like a pro stock car, not as high launch RPM as they use, but fast, straight and with the front wheels just barely coming off the track surface. But I launch at a relatively low RPM and let the converter do its work. No point in stressing parts and pieces if you don't have to.