Do you have the miners' ship date? That is something to keep in mind. Don't let the potential for money cloud your vision. I'd suggest reading up on the difficulty. Here's a place to start, along with the threads on bitcointalk:
http://www.reddit.com/r/bitcoinminingWhile I'm not one to quote attorney's fees, $2000 to setup a simple LLC sounds pretty high. I've incorporated in the past for a fraction of that cost. Is your attorney also drafting your contracts? Providing the setup to limit your tax risk? Liability?