Just a heads up, There was a lot of problems running RSAT (Remote Admin GUI Tools) on Vista when interacting with 2008 R2. Windows 7 quickly became required for 2008 R2. (Windows 7 is client OS of 2008 R2)
Just letting you know. You could also install one of Windows 2008 R2 servers in GUI mode and use RSAT tools on that to manage the others. Knew plenty of admins who did that.
Otherwise, rock on.