Ok i was looking into going premium what are the limitations to the gold, which is the one i will be looking into? because i am currently hosting my server on one of my own computers and the server map collection has made the total server size about 9gb. So what is the speed allowance, space limit, availability rate. etc...?

You can add as many maps as you want to. The service strives to be available 24/7, but you can contact support if you are seeing downtime causes by the service. Bandwidth is also unlimited, but most people would use web hosting or another service as a map redirect because it is always slower to download files from the game server.