Apologies for the series of questions Steve, but are you planning on gaming with all, some or none of the building interiors?
Rereading the thread, there are a couple of photos that hint at being able to put figures inside the terrain...is that going to be a big part of your game, or is the idea for mot of the action to happen on the streets?
If you are using the interiors, are you representing any interior walls/furniture etc, or are you keeping them as open as possible?