Convert sail from bolt rope to slug sliders?
I am looking at purchasing a set of good condition used sails for a Cal 20 for cruising. Most sails I see for sale have bolt ropes, but I want the sail to have slug sliders so that I can flake it onto the boom. I also want to add reefing points. Is there anything I should be looking for in the sail to determine whether this conversion is possible, or is this a straightforward process?
Also, what weight of dacron is appropriate for cruising sails? I see North or Ullman sails available the 3.5 to 6 oz Dacron.
Thanks in advance,