Kevin...
Here is the issue as I see it. You are only going to be there 3 days and there are so many good golf courses in the area. You simply could play #2 6 times and you'd be okay, but you'd miss out on all the other courses. Having said that, I think #2 and Pine Needles are spectacular. So, by only playing #2 you will not see Pine Needles. And you will never know if you are a Tobacco Road guy and I find Tobacco Road so unique that I think everyone needs to see it. I ended up not liking it, but I am damn glad I got to see it.
Bear in mind, I've only been there one time for 5 days. So I haven't seen everything. I am dying to see Southern Pines...maybe that is a must play, but right now I don't know. However my 5 days was so incredible, I plan to go at least once a year from here on out, so I'll see more of it over time.
For more information, I've written reviews on my site and Chris Buie has a great information on his Sandhiills Insider site. Please check it out.
Also bear this in mind, I really enjoy checking a lot of things out on my first visit. So, I choose more courses over multiple plays on my first visit with the multiple plays coming on my next visit after I find out what I like. Perhaps you are the same or different, but my recommendations are based on my personal biases.
Contact Chris Buie for more information. He is a Pinehurst guru!