Take a look at Cameron Pond.
Many of the homes are closer than you will like, but there are larger lots available.
Also, the Peninsula at Amberly may be worth considering, if you like the area.
During the build process, you should work closely with the builder. A Buyer's agent may help you with details, keeping track of timeline, etc. If you are out of the area, that can be a real help.
And a good agent with a background in construction can often work as an "extra set of eyes."
You will probably buy from an on-site agent who represents the Builder only. You may consider the benefit of leveling the playing field.