To answer some of the questions:
1. I'm associated with a small general civil practice law firm, and for a while I'll be helping out in all areas.
2. The bar exam is a grueling ordeal, in terms of the studying, the actual test itself, and the nerve-wracking wait for the results. As far as studying, I treated it not as a pass/fail exam, but as a regular exam, where I was trying to get the highest score possible. I did the Bar/Bri homestudy course, so I could go over things I didn't understand that well as often as necessary. I did PMBR, which really helps for the Multistate. And I did lots of practice questions, both essay and multiple choice. The exam is very passable, but you've got to show the exam a lot of respect.
3. Law school teaches you a lot about "Constitutional Law," but if you're a Libertarian/Conservative, it mainly pisses you off to learn how the Framers' vision has been corrupted.
Finally, it's not true that you have to agree with your professors to do well, at least not in law school. There's usually only one exam per course per semester, and the only identifier is a randomly assigned number, so the profs don't know whose exam they are grading. I was an out-spoken Libertarian at CU Boulder, and I ended up in the top ten percent of my class. But I also have a Master's, and in that program, one's philosophy was graded by several of the profs. Even so, you should speak your mind. They're just grades.