I am going to use Gigabit ethernet ... I had originally planned on using airports NAS. However after a day of testing I am returning the device and going back with my original plan of using a Linux box on my network. Far too unstable, doesn't stay connected, can't connect to it wired, etc.
Not sure how I am going to share the drive yet, going to hammer that out this week. (Need to wipe my Linux box first, its very dated and I screwed it up when I was trying apt pinning)