Welcome, Garrett.
Well it is obvious you have critical thinking skills and intellectual honesty. This is wonderful! It does mean, you'll never be able to be a Jehovah's Witness. I know as this is what happened to me. I was born in never baptized. I couldn't be honest with myself and sign up to this crap. I have never received satisfying answers to my questions from these folks simply because they don't know. It's all made up and it changes over time. How can you claim to have truth one day and change it to say this is the 'new' truth (aka nu lite) the next? To me it is obvious there is no higher power guiding this group.
I think you'll find your depression abates as you distance yourself from the JWs.
If your depression does not get better, definitely seek professional help. You may need a counsellor to help you work through this time.
My advice... look to who you really are and do what you love. Surround yourself with positive, supportive people. They are out there.