You definitely picked a great place to visit if you want to play golf and a good time of year to visit. You will get out of season pricing at the courses and the weather won't be overly hot yet. My wife and I golf regularly in West Palm Beach and have recently started a blog dedicated to independently reviewing courses in South Florida, so hopefully I can help you.
I haven't played Abacoa yet, but I have heard that it is a nice course. I have played North Palm Beach CC and Palm Beach Par-3 and like them both, but for different reasons. North Palm Beach CC is a challenging course, especially around the greens. The greens are generally fast with a lot of break in them. Also, it seems like the majority of the greens are elevated, making it more difficult to hit greens in regulation. Palm Beach Par-3, my wife likes better than I do because it is short (obviously, being a par-3) and doesn't take 5 hours to play. The wind is normally pretty high there since it is right on the ocean. I like the Par-3 because it is a fun and located in a neat spot between the intercoastal and the ocean.
If I were recommending other courses, I would have to recommend two others that I have played recently and have reviewed on our blog. The first would be Park Ridge Golf Course, which is located in Lantana. I would choose this course because it gives a different experience than the others. It is very hilly and is sufficiently difficult to offer a good challenge. You should check out my review for full details of the course.