Hello glorfindel and welcome!
You mentioned that you are a active witness and from your profile, you are 17.
Also, I do not plan on getting thrown out of the WT just yet, because there are some in my family who are witnesses, and I have no intention of forcing them to shun me. I know that despite my secrecy, there are ways to find out just where I am generally.
When you talk like this, it show me you have serious doubts about the organization, you really shouldn't even be thinking about baptism. Once a baptized witness is disfellowshipped, the brutality of the arrangement shows full force and takes many people by surprise. As some of the other posters mentioned, don't let the elders know where you are getting the organization history from. Just one or two questions and then mention you don't feel ready for baptism. (they will try to pressure you but don't fall for it).
I hope you start looking for friendships outside the organization, maybe with other conscientious youths your age. Look hard, you will find them.
And one more thing, keep studying and checking up, this is how you protect yourself from tragic mistakes.
good luck