It is regretful that such worries plague sites such as this. While I find stories including minors to be distasteful, at best, I believe that writing such tales is a healthy outlet for such fantasies. At least, it is far better than living out such fantasies. Something I think we would all agree on.
There is an ebb and flow with any situation such as this. Eventually the pendulum will swing back the other way. Unfortunately, when the pendulum strikes and if one does not have the proper backing one cannot take government censorship to a level where one can make a difference. The financial requirements for a proper defense are truly a tragic part of our legal system.
I would suggest, Jinn, that you bring your site to the eyes of the ACLU. While I am not a fan of the ACLU, due to their failure to honestly live up to their name, they can be of help should this site fall under the watchful eyes of the government. And, at the least, should the government attempt action, you might have recourse or the means to fight back should the ACLU have an eye open.
MY support for any necessary changes goes out to you, Jinn. I disagree with the actions taken by our government but I agree with the necessity you feel for removing certain content. Do as you feel necessary.