Hi Dakota,
I am no expert on this topic by any means, but I do believe that in order to take proper business deductions you need to be at least one or the other.
Another member, Lily, of Virtual Office Goddess, hosted a live chat on the topic of LLCs here at the forums [quite a while back] and the text from that chat is
archived here - it might be a good place to start looking for answers.
Personally, I finally hired an accountant to help me navigate all of the business tax laws, and deductions.