Sorry Scott, but Baltray is which course?
Baltray is County Louth GC.
The Island is one of my favorite courses in Ireland, probably becuase it was my first course just off the plane in 1990 and the members treated us like royalty. A more recent visit 2 years ago revealed a still fun (though in many ways on the front nine changed) course but a very different experience with the modern large American style clubhouse.
I was really impressed with the Portmarnock Links course--it was the biggest surprise on my trip to Ireland 2 years ago. Some very solid golf holes, especially on the back nine.
If it was my call I'd play The Island or Portmarnock Links and see Portrmarnock GC in full on another trip.