I need quick inspiration! (big group shot, 50+ people)

I need Strobist inspiration.

Full team photo at work, 50+ people. Won't look great, and I don't think there's much opportunity for anything funky.

Suggestions?

Light will be predominantly fluorescent with light spill from the (tinted) windows.

I'm thinking, front-fill flash, maybe one at the back as a rim flash (though I'm not sure whether it'd work as it's a biiiiig group). Might ditch the rim and just have two flashes lighting the whole group in bounce fashion.

Thoughts? Shot is in about half an hour.

How high are the ceilings and what colour?

How many flash units do you have available?

EDIT: oh... to late now huh?

possible to shoot from above? So that the distance between lens and each head is about the same

Too late... due to cramped lack of space, I shot from high(er) up, as high as possible. Two lights, one from the front, and one from the side.

not much room or scope to do anything fancy...