Interesting topic with the somewhat recent news of Marissa Mayer's decision to retract the remote workforce at Yahoo. My comments won't relate directly to BDC, but I think they are relevant.
I've worked remotely for 12 years and don't think I could go back. I'm at my desk within one cup of coffee in the morning and the last thing I do before heading to bed is check email. Traffic jams on my way to the office consist of a dog trying to decide which way to go on the stairs.

Work is "always on" for me in a healthy way and I know I would struggle to return to a typical office environment. I like always being at work.
I've managed a remote workforce over the course of my career too and I'd offer the following advice. It isn't for everybody. It requires an individual that is intrinsically motivated and generally task oriented. That said, those that
can succeed in a remote environment tend to
thrive in a remote environment. There are a lot of distractions in a typical office environment that do not exist at a home office, especially for "social" employees that watercooler as much as they work. There are distinct pros and cons to both work environments.
The tools and technology to hold them accountable is the easy part. VOIP phones register calls and call times etc, you just need to identify the means to preserve the same tracking methodologies whether the team member is remote or in the office and hold them accountable to the same volume you would in the office.
It sounds like you have the perfect environment to dip a toe in the water without jumping in head first. Could "home office day" be a motivational tool for your team? What if you only offered it to top performers and made it a coveted reward that others worked towards? You could set the stage for improved performance across the team and alleviate some congestion too. WIN WIN! If you are tracking the success metrics you'll quickly figure out who is capable of the perceived increase in freedom to perform and who needs the structured environment that clocking in at the office provides.
Hopefully this was helpful to you in some way. I'd say give it a shot for a few weeks with a trusted performer or two that don't need persistent direction and track their results. Happy to talk more with you about managing a remote workforce too if that would be helpful. Good Luck!
Ryan