I have to agree with Jeff on the socks. I've used 2 different styles and I wasn't impressed with either. When the chutes loaded up they don't like to work (when you need it to work).
Sandboy gave some great advice I thought was common knowledge until I started racing on other's boats. Swivel shackles are a must. Standard equipment for chutes, just buy em.
The necessities are a halyard, a block or existing sheave at the top, 2 sheets, a pole up and pole down, turning blocks at the aft corners. Twings aren't a must have, save them until after you practice trimming w/o them.
Merit 25 # 764 "Audrey"