Chris,
I've played both courses at Seabrook a few times. Both are housing courses, no doubt, but they have their good aspects. Ocean Winds is more interesting, with a "Jekyll and Hyde" routing where the front nine runs through the woods and back nine runs through dunes and marsh. Seabrook is a very laid-back place, and it will be a good place to play golf while staying there for a few days.
Honestly, the public golf is not tremendous in that part of the world. There are several good private courses (Cassique, River Course, Briar's Creek, CC of Charleston, Yeamans Hall) in the area, but the public golf is very lean outside of the Ocean Course (top-notch but very pricey). My advice: stay on Seabrook, enjoy the golf there, and jump to play one of the privates if you get the chance.