First of all, you have to choose what type of FG farmer you want. Do you want a Ray of Light/Hope deck (only requires 6 upped cards - Ray of Lights), or a CCYB (a fast entropybow)? Or do you want to go for a classic SG-style timebow or a Puppychow-style control entropybow?
After you've answered that question, we can provide you with the deck code. However, be sure not to just plain use the deck without editing, because you should make minor edits to the deck that suits you best.