Materials is a better question for a sailmaker. Also, you need to ask yourself realistically how much racing you plan on doing, and what your budget is for sails. You also need to realize that racing sails need to be flaked (or rolled in your case) and cared for a little better than dacron.
For a small boat, a lot of people chose dacron b/c the weight savings of hi-tech sails on a small boat is little to none. Also, the loads aren't nearly as high, therefore you may not NEED race sails. If this is a new to you boat, it's going to take a couple years for you to learn the boat, learn how to race, and develope crew who are competative. IMHO no sense in dropping coin on a set of kevlar/carbon/technora sails until you have the boat prep (running rigging
, layout, bottom, foils) done, the crew is up to speed and boat handling is second to none, and finally you understand tactics and stategy and can implament them on the course. Then you drop the money on sails. Long story short, you're not going to win races b/c you have great sails and are going up the left side when the right is favored.