We could do this at my place, as long as there aren't a TON of folks. I've got a two car garage but one half is pretty much used up. I would think that we could have around ten people or so. Someone else might have a better setup with more room though.
I have at least two kits to build, possibly three or four, depending on whether or not I can find some decent 100% receivers.
As far as a timeframe, I don't know, I posted this over on gunco.net and it seems there was interest in the second weekend of April.
I'd say this doesn't have to be an AK only build, we could work on whatever you want. Just know that I know NOTHING about ARs, so someone else would need to make sure everything that is needed is actually available.
I would also like to learn to do parkerizing, does anyone have a parkerizing setup?