While I wish you the best in your getting the line and supplies that you need, PUH-LEEZE know more about it than walking into a boat supply store and saying that you need such and such for a certain boat. From someone who now deals with that kind of stuff all the time, without reference guides (most often available from the manufacturer) those at marine supply stores cannot possibly have in their head every rigging requirement of every single boat made in the last 100 years, sail and ski and house and bass, etc.
Do not assume that if you don''t know what your boat needs, someone in a retail store will just off the top of their heads. Know your own boat (you are the one who owns it and sails it, yes?) and have ready what you need, and you will be much happier and will be able to get the correct cordage and lines and rigging.