Wow, I bet you will be hard to beat with those #'s. That is about 10 points behind a laser and I doubt the boat is that much slower.
Definately slower than a Laser. There are plenty of Sabres & 420s racing in Oz, so the Oz figures should be a good guide.
I, as a very very very average Laser Radial sailor could keep ahead of a very very very good Sabre sailor at our local club events, so agree Sabre is definitely slower. As said, Australian VYC (or YV) Yardstick rating differentials for Laser and Sabre would be very good basis