I bought mine new from IRO too. While my mtb is a decent candidate for converting, I still like the gears when it comes time to climb the hills.
Your bike is too new to convert. Plus the frame looks heavy as hell. I'd look for a lightweigh rigid mtb frame w/ horizontal dropouts at the numerous garage sales that are starting around now and convert that to SS. A fixie on the trails might be great for low speed technical maneuvering, but might suck when it comes time to bunnyhopping logs. Unless you're really good.