One thing you should know is your stutter will probably get better with age. I went to law school with a stutter myself, though mine was not as severe. There are challenges, but keep in mind that there lots of work that is not in court or in front of clients. If you do this stuff really well, you will be valued, dont worry. I would also advise you to not give up on speech therapy. Try other therapists. Desensitization through toastmasters etc is also great. Anyway, I know for sure you can be a great lawyer, even with a stutter. But if it seriously does not get much better, stay away from litigation, where the courtroom may be too much. But there are so many other areas where you can excel.