That is not a bad ratio, about 21.x-1 sail area-disp. I'm 540 with 6500 lbs or about 24.5-1 upwind. currently 800# for down wind, with a small spin, 900# when I get a full sized one. Both of our boats have decent ratio's for around here with boats that are easily driven.
She drives me boat,
I drives me dinghy!