Roach
It is easier to reduce sail than to create it. If you race get the biggest sail that the rules will allow and be prepared to reef it when conditions dictate. PHRF rules limit the amount of roach on the mainsail. Your sailmaker should know the largest legal dimensions. I would recommend that the two top battens be full and the lower two be partial. The full battens help support the larger (than crusing) roach. You said that you have already ordered your sails...what did you order? I purchased North 3DL sails a couple of years ago and I have been very happy with them. However, I am sure UK, Sobstad, and in your area, Banks (Now owned by North?) also build a good sail. Doyle is known less for building racing sails (I think) but I am sure they make a good sail, too. Main thing is to talk to the sailmaker and get comfortable with their knowledge of your boat and your goals. You already have a blown out dacron sail. If you ordered dacron, in a short period of time you will have another one as they stretch faster than the other materials that you mentioned. My North sail has held its shape well even though we've sailed in some good breezes. In a year or two it will probably turn to dust, but while it lasts, it is a great sail. If you are going to race, I think you should buy sails for racing and forget about how long they will last. Each time you race with a dacron sail it will stretch a bit, UK tape drive Pentex, or North 3DL with Pentex or other high tech fibers will not stretch as much or as quickly, but will be worthless when they finally do fail after 3 to 5 years (or less). The B & R rig should not affect mainsail roach. What will happen, is that the top battens and sail roach will rub on the backstay when you tack. Don't worry, t doesn't chafe (much). In light air this is annoying as the battens often catch and do not allow the sail to cross to leaward. This condition is not impossible to overcome. Changing to very light battens for the two top full ones will ease some of this light air problem. Remembering to filp the backstay when you tack will also cure the "hang up." There are other devices which keep the backstay clear of the "roachy" sail when you tack. I think for what I do, they are too much trouble and cost too much. Smooth sailing, Rons/v Counterpoint, Hunter 33.5