http://www.bhphoto.comThis is a fantastic place to order pro video stuff from. They are not the cheapest around (they still have low prices though), but you can sleep easy knowing you will get the brand new stuff you ordered. Many online vendors are scam artists and will try send you used or wrong gear for a restock fee profit. B&H is top notch and very honest.
Here's the direct uri
http://www03.bhphotovideo.com/default.sph/FrameWork.class?FNC=ProductActivator__Aproductlist_html___136397___BEDXA4___REG___CatID=2152___SID=ECEDCC80F20
If you plan to use condenser mics you may need to get the phantom power version of the Beachtek adapter. It is around $259 I think and can be found in the same section of the site as the normal XLR adapter.
As for mounting the mics, I believe it all depends on what type of mic you will be using. I will let someone more experienced with a variety of mics handle that one...
Good luck,
R