Welcome Maker's Mark. I'm serving as an elder now and have asked, or are currently asking, many of the questions you listed in your post.
I had to ask myself is, where does the body of evidence for any given claim rest? If I placed both sides of any given argument on a scale, which way would it tip?
For me, the deeper my research goes, the more evidence I find contrary to some of my dearly held JW beliefs. The more arguments I hear from "the other side," a side that is grossly unrepresented in JW teaching, the more often the scale tips away from the Watchtower Society. We have a serious problem with information control in the Organization, and rightly so. If we freely discussed all possibililties relating to any given teaching, said teaching is at risk of becoming less convincing. The more plausible options there are for understanding a metaphsyical concept, the further we get away from "absolute truth."
There are some things that JWs have right. But on these subjects, JWs are not the sole posessors of these ideas. We're not as special as we like to think we are.
The key doctrines that make JWs unique from the rest of the Christian denominations pose another tricky problem when scrutinized. If I move aside those that are shaky, unconvincing, logically twisted, or outright false....I'm left with the sinking feeling that at it's core, JW theology is not that different from the other Christian denominations that are, according to JWs, going to be the objects of Jesus and Jehovah's vengeful fury.
You were right when you said that you have a lot of thinking a research to do. I wish you the best in your search.