You shouldn't have to add a port at the end when you connect to this one- all you need is the IP. :]
You should come on and try it, it's a pretty neat server (says the owner haha). Little to no griefing is possible, too.
Hey Nate. Would you mind adding my server to the first post in the Minecraft thread? It's just starting out and I want it to gain a bit of traction. The IP is 50.89.130.137
Thanks!