Here are a few things I just deciphered from BATFE regarding home FFL licensing. in order to have a class 01 FFL you need to show store hours and have a store front or if you want to be seen by appointment only then you need to acquire gunsmith certification or if I understand this right you need to have your firearms instructor certification and you can operate your home as a warehouse. I started my search here
http://www.atf.gov/regulations-rulings/ and keep in mind all of these are captioned with you must comply with state zoning and licensing laws as well as the federal laws.