Ahava,
Welcome! You will find that the majority of people here are either ex-JWs or are associated in some way with the faith but no longer believe. But, your taking pause before committing is a good idea. I like how you've come to the real heart of the matter. Is the Governing Body of Jehovah's Witnesses really the sole spokesman of God and is the JW religion really God's earthly organization? If you find indisputable evidence of this, then obviously that's the way to go. If there is any doubt about it or actual evidence to the contrary, then you have your answer.
I'm born-in, multi-generation and after taking a hard look at the religion of my youth and family, I decided that there is more evidence that they are not lead by God than that they are. Unfortunately, once you get baptized, in order to leave you have to put up with having all current members shun you. Perhaps you don't have close family in so it doesn't really matter, but many of us have the majority of our families in the religion so it makes it a tough choice.
I found the jwfacts.com site to be very well done and really eye opening.