Rolling a sea kayak is similar to rolling a whitewater boat with some slight variations depending on the size, shape and weight of your sea kayak. ACA advocates a C to C roll. I found that a fully packed sea kayak (multi-day trips) has more surface area as well as weight so my preference was to use the old screw roll if my hip snap with a C to C wasn't strong enough. Make sure you carry a paddle float (or two) with you in each kayak and practice your paddle float rescues in the open water.
Surf zones can be a lot of fun and since you're a solid Class IV paddler you'll be ahead of the game. Sea kayaks are long so they have lots of hull speed and they are easily side surfed, so keep a strong rudder stroke going and enjoy the ride. Timing is key, ocean waves move as compared to river waves that are stationary.
I ran a sea kayak program for many years in Baja so if you have any questions feel free to email me directly.