I'm trying to understand where you are coming from. You make alot of good points. I'm not sure how compatible your own ideals are with Jehovah's Witnesses.
If you do decide to get baptized you are no longer free to come to your own conclusions based on your own research. You always must come to the same conclusions they do, unless they tell you otherwise.
If you just associate and do not get baptized, you will soon realize how difficult and nearly impossible this course is. You will never be accepted by Witnesses and are slated for destruction if you after having recieve "accurate knowledge" do not become a member.
Now i'm not saying there is no benefit in associating and learning different viewpoints. All i am saying is to make sure the reality of things is compatible with your own ideals. And i must say, that many of your ideals seem to be quite good.
Path