San Juan late can be a tough hunt. It would require alot of scouting or possiblly go with a guide. It is not one of the best units for glassing. Which is what you need to be successful on a late season hunt. Dutton is a good late hunt, and with 13 points non-res it was 50% draw last year. With point creep you might be a year behind for that one. Boulder late is somewhat underrated(100% w/13 points) I think and I know of some bruisers that came from the late hunt this year. The Pavant late hunt is good(also 100% w/13 points), but the big bulls will be in rugged country with a lot of preseason scouting required. You might look at Central Mountains Manti for the early rifle. It is a rut hunt with a realistic chance at a 320-340 bull. Big unit with a lot of country and it looks like you would be 100% with 13 points.
I'm sure there are others that could help steer you in the right direction.
oakbrush