But please don't panic. That is not the end of your application. A lot of people got RFE and most of them got cases approved. As long as your re-organize your materials well and answer the questions in RFE accordingly, the chance that you get approved is very high. I got worse than you. My notice was intend to deny but I was able to get the case finally approved. You can check my previous post: http://web.wenxuecity.com/BBSView.php?SubID=immigration&MsgID=143867
As you can see, my background is pretty weak. So if I can do that, you should be able to do that.
If I were you, I would get a lawyer. It might be possible that you can answer RFE by yourself. But I would not take any risk at this situation if I were you. If you mess up this time, you have to refile or appeal, neither of them is pleasant.
As I know, a lot of lawyer treat RFE as new case. The cost might be from $3,000-6,000, varies from one to another.
For lawyer selection, I heard that several ones are pretty good at RFE. And I do think that mine did pretty well in my case. But I don't want to put an ad for him or anyone else here. If you need that information, send a QQH to me.
Please don't give up. If you try your best to fight back, at least you will have no regret in the future.
Hope that help. Good luck.