Heh, you are welcome to get them anodized but right now we are planning on having a build night full of painting and powder coating.
1) As for the Misumi/McMaster Carr and Stock Drive stuff: Misumi is the tough one as we are buying the parts long and re-shipping them. We also don't really want to count out nuts and bolts for everyone from the packs so I'm not sure we will actually be doing that as a group or not. Sorry
2) The Delrin we already have as one of our members has a good relationship with a plastic supplier. McMaster carries it IIRC quite cheap. You can buy acetal as it's just a generic name for Delrin (which is the Dow Chemicals trademark IIRC)
3) The parts we are cutting via the laser already includes the bot feet - we cut them from 1/8" aluminum. Not positive how well they will work, but I think they might be good.
4) As for the rods, personally I'd rather do ACME proper but I'm starting with M8 to see how it works first.
-Mike