So I have an upcoming architectural gig and the client says he also wants portraits of the staff. I tell him it's not my area of expertise but he says he needs it done the same days that I'll be shooting the space, so let's knock the bastard off at the same time. Sure, I say, and I give him a quote that I was sure he would never agree to - but alas, he agrees, and I'm shooting a bunch of portraits. 12 in total, and they need to be pretty rapid-fire, probably no more than five minutes per subject.
this is the gear that is relevant to portraits that I could use (assuming nobody is going to tell me to use my 17ts or 15mm fish here)
1d3
5d
17-40
50 1.4
70-200
3 lights
a smattering of pocketwizards
a couple of large umbrellas
6x6 diffusion/bounce panel
3x3 diffusion/bounce panel
booms/stands/etc
Now, I'm sure I could just throw up an umbrella CR and call it a day, but I want these to be pretty sharp looking. Looking for suggestions for an easy light setup that will work across a wide range of faces and body types (these will mostly be head and shoulders shots).
Any help is much appreciated. I was thinking either the 50 or 70-200 around f8 or so, but not sure what is a generally accepted lighting setup for corporate headshots. Is there some standard, or anything I want to avoid for sure? Usually when I shoot people I'm doing action sports/edgier stuff, but I don't want to make these people look like 20-something daredevils, so I'm asking people with more knowledge in this area. Thanks 

