Dear Alyssa Parada,
I don't have a particularly high regard for the FDA, and don't place all that much reliance on their findings. With imported foods, I have even heard them called a "tombstone agency," taking action only after people start dying.
As for the cellulose, I actually have less concern than with some other additives...as a child I chewed and swallowed twigs and sticks...
One example of something I do feel concern is sucralose, the non-nutritive sweetener in Splenda and many diet sodas. Sucralose is a synthesized compound that no living body was ever exposed to before chemistry. I accidentally bought diet soda and did not like how it felt in my body.... yet (like cellulose) the FDA has designated sucralose GRAS, Generally Regarded As Safe.
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Overall I like the idea of returning to a system of local foods, and find other ways of dealing with the problems cellulose solves.