Although I do not have any personal experience with Champlain, I believe that would be a great place to extend your education. Very positive reputation, federal support (Leahy Center for Digital Investigation) and an well rounded curriculum. There are a few other programs as well, all with their pros and cons.
You can also look at (in no particular order):
The George Washington University (my alma mater)
George Mason
Purdue
Johns Hopkins
Carnegie Mellon
University of Central Florida
Sam Houston State
All of these schools have very good programs, though under different names and colleges, but all very immersed in the field of digital and multimedia forensics. You'll need to decide whats best for you personally based on time, costs, areas of interest, etc.
Good luck!
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