My thoughts are this:
1 hour minimum per $100 donation, which is actually about the going rate for a nude model anyway, but you get a write-off.
You're also getting a studio (ok, 'garage', but hell, it's big and clean enough to qualify) and lighting use - AND Nick telling us all what to do.
For the shoot itself, 15 minutes per person, then break for the model.
During the break, we can arrange larger changes in lighting/backdrops/clothing choice (unless you want to do all totally nude, s'up to you).
Incidentally, 'nude' != 'porn'. Just sayin.
15 minutes should be enough time for smaller lighting changes and lots and lots of poses.
The only downside is the backdrop lights for the all-white backdrop have a cycle time of ~3 seconds, so you can't get a gajjilion poses, or shoot a bunch 'around' a pose unless you ask Emily to hold it. So, dynamic stuff will be relatively hard to grab.
Of course, the main lights on low - which allows for bigger apertures, means <1second cycle times.
If Nick brings his, I'm guessing their performance is better.
Emily wants a 6-photographer limit. She has no issue with MUA's, reflector-holding chaps or chapesses being there.
Gawkers not really gonna be welcome - everyone there needs to fulfill a function.
So far it looks like, for payees:
Doug
Tyler
We need at least 1 more to do this, ideally 4-5. I will probably sit most of it out in return for organizing, or jump in at the end if she lets me.
Besides, I don't want to be 'that guy' bumbling with experimenting with the lights when there's a nude girl in the room. 
