I'm a little undecided, as well. Most of your views are reflective of mine, but with a few exceptions:
Obama:
I don't think he has realistic expectations (although not as unrealistic as Bill Richardson: "Day 1, I will cure AIDS. Day 2, we'll be out of Iraq. Day 3, there will be no more homeless people or drug addicts!" etc). He is pretty charismatic, though, and would probably be a good diplomat. I think he'd be okay, but probably shaky at the beginning. I have a feeling that he wouldn't be able to overcome the inertia of the way that things currently run in the White House - sort of like one person trying to stop the waves at the beach. We'll see.
Clinton:
You'd have to be more clear on why you didn't like Bill, but either way, Hillary is not Bill. Sure, they're married to each other and probably discuss stuff, but when was the last time you heard of a married couple who:
1. Were nearly identical in opinions and approaches to problem-solving AND
2. Had been together for longer than a few years?
My wife and I share similar opinions on many political issues, but if we were both presidents at different times, there would be a HUGE difference, and I think she'd probably actually do a better job than I would. Just don't blindly confuse Bill and Hillary without better reason than their last name. I could probably find more similarities between Huckabee and Obama. Really. If you're not going to vote for Hillary, that's fine, but you should really have a better reason than her last name.
And as far as the crying thing, I don't know if it's real or fake, but even it were fake, would it really be any worse than the rest of the sympathy-vote-getting tactics used by other candidates in just about every presidential race in the past 50 years? The only reason that we even heard about her "sniffle" (there weren't even any tears - just a mild waver in her voice for about 3 or 4 seconds) was because the media jumped on it like a pack of wolverines. I don't see what's so special about it - other politicians and candidates have cried before, and nobody thought twice about it. The only reason I can think of that it mattered was because everyone that said she was weak WANTED her to show any sort of weakness (I could easily list off a dozen occasions where other politicians or media people have commented negatively about her as being unable to lead because she would be weak as a female). In all, if you were to put aside her gender, she's run pretty much the same as any other candidate.
All that said, I haven't chosen her yet because I am still a little cautious and am curious about Obama, but I am still leaning slightly towards her because:
1. She did a lot of foreign diplomatic work while Bill was in office, so she has the international relationships covered pretty well.
2. She's already made a lot of mistakes in the past, so she won't have to repeat them.
3. She probably has had the equivalent experience of a VP, so that would help on day 1.
4. She has a track record of being decently aware of social problems, and addressing them. Bush just made serious cuts to the funding for the housing for the elderly and housing for the disabled and the department for violence against women. It would be nice to see those cuts reversed so the government gets back to trying to help people that are less fortunate.
My primary concern with her is that Republicans don't like her at all, so I don't know how much stuff she would be able to get through Congress.
McCain:
There's a bunch of things that I don't really like about him, but I think you hit the nail on the head with him wanting to stay in Iraq. I'm also concerned he'd be anxious to spread into Iran. He REALLY bought into Bush's constant talk about terrorism - he's been pretty much reciting all the major talking points verbatim.
With any of the candidates, just don't fall victim to the common problem of investing too much into a single person. The president is a powerful figurehead, but he cannot do very much by himself. The majority of the power lies in the rest of the cabinet, the Supreme Court nominees, and so on. So as much as the president may want XYZ to happen, he or she can be shut down before the public even hears about it.