3rd gen born-in here. I think I can relate to what you're going through somewhat, but most of the doctrine questioning for me stopped in my late teens when I started thinking to myself "If I hadn't been raised a JW, I'm sure I'd have ended up an atheist." At that point, I entered a long period where I felt like something was wrong, but couldn't come to terms with the possibility that they'd been distorting the truth, changing the bible to fit doctrine and essentially making it up as they go along for a bit over a century. jwfacts.com was what finally got me over that hurdle.
You might take a look at the article on paradise earth on jwfacts (http://www.jwfacts.com/watchtower/earth-forever.php) as it seems like it's applicable to where you currently are in your journey.
Also, another article that you might find eye opening is this one:http://www.jwfacts.com/watchtower/salvation-only-for-jehovahs-witnesses.php
From what you said, the only thing that seperates you from just about any mainstream christian religion is the belief in paradise earth. You might do some research on that doctrine and see if you might be better suited going to some other church that doesn't have so much doctrine that you disagree with (shunning, time prophecies, child baptism, jesus as mediator for 144,000 only, etc).
It's a journey to be sure, but I'd suggest that if you're already inactive and out, you might be better of being sure that you want to go back before you start the process. I'd LOVE to be where you are right now as far as that goes, and it would be a shame for you to pop up on their radar only to regret it later and get yourself DFd and fully shunned by family (if they're not already shunning you).
You might also find this article on jwfacts interesting: