I just made this instance. All of the mobs and bosses are lua scripted. It has two bosses, it's in a place where you cant get to unless you fly or port. It has two bosses, and three custom mobs. I didn't add any drops so the server owners could customize them with their own items. Here are some pics:
Well, there it is, please give feedback so I know what I should do better next time. To get there type
orCode:.recall port sgCode:.recall port silvermoongorge
P.S. If there are any problems executing, tell me so I can fix it