Just some food for thought, you might want to look at this Architect's site,
Surber Barber Choate & Hertlein Architects, P.C.. Under "Portfolio" and then "Commercial/Institutional", the Architecture
Auditorium, The Old CE Building and and the Swann Building are all renovations or adaptive reuse of older buildings on the Georgia Tech campus for which I was the AV and
acoustics consultant. Swann and Old CE remind me of at least the front portion of your building in that they were old brick construction being converted to modern classroom,
meeting room and office space.
I will say that even though those buildings were generally in much better condition that the Woburn Armory appears to be, at least in part because they were still occupied and in use, there were still a number of challenges to overcome in incorporating modern building systems (
HVAC, networking, AV,
etc.) and modern code requirements into the buildings. One of the aspects that may affect you is that playing on the historic significance can help in terms of funding and marketing, however this may also impose many restrictions on what can or has to be included in any construction. For example,
ADA and code would probably require an elevator and any historic status would probably preclude adding any rooftop elements that were visible from the street. With no attic space that probably results in having to provide a pit for the elevator, which can lead to other design issues all of which have costs associated. And on the Swann Building project there was a great deal of design effort and cost involved in coming up with a creative solution for where to
house the
HVAC equipment and how to distribute the air. The negative is that such issues require a lot of work and potentially money, the positive side is that finding solutions is very fulfilling and the results can be quite interesting and exciting.