Correct on the sailor. That's the reason we escaped Atlanta for the GA coast.
When are you planning on seeding? Rye germinates very quickly but does take a while to have a stand that can handle traffic.
I would recommend using Umaxx 47-0-0 once the turf is up. At a pound on N per thousand, you will get 23500 square feet from one 50# bag. This will also give you a 12-16 week release. For the money and longevity, it is pretty cost effective. It also breaks down very quickly so you are not sucking up the granules if you/they are bagging this area. I do recommend bagging rye as it is a pretty aggressive grower with a lot of clipping.
Hope this helps.