Well here is the thing. I hope you know how to setup a bungee cord server. If you dont just PM me and I can tell you. (It will server as the hub). As far as the domain, just think of something original, but the thing is that i dont think you will be able to set it up that way, because to be able to forward hg1.bla.com you will need a private ip to set it up. If you dont understand what I am saying, post again, because I am on my phone, and my thumbs are hurting!