My comments:
USER:
The biggest hurdle was as usual for me a small problem. Use the FULL username ¬_¬
I found this helpful: Wendel's Small Hacking Tricks - Microsoft SQL Server Edition | Trustwave | SpiderLabs | Trustwave
tbfh if you havn’t see this before you have no chance 
ROOT:
My biggest hurdle was using the wrong name AGAIN! Other than that pretty straight forward.