I haven't had time quite yet but pics are done and I'll pretty much copy over what I posted on Kamado Guru, but as far as a cooking stone goes, get to a Sam's Club and get their accessories pack for 99 bux.
http://www.samsclub.com/sams/kamado-accessory-kit/prod14170028.ip?navAction=
That will give you an indirect heat stone, a larger (pizza) stone, a half cast iron griddle an electric starter and a ash scraper/shovel.
A top rack is available directly from Vision for $35.00 shipped free and no tax. They have a cover as well for $40. again shipping is free and no tax. Vision had them to my door in 3 days.