Hi J.,
I think you are a very normal mom with a very normal kid. When I worked with toddlers, our group was from 20-30 months-- and there was a reason we moved them up at this age. Your daughter is right on the cusp of two, and while there is no certainty that every child has 'terrible twos' (mine, for instance, had breezy twos but I was ready to run away from home when he hit three!), it sounds like your girl is really, really typical.
Other than telling you that you aren't a bad parent (hey, if you aren't giving into the tantrums, that is half the battle right there!), I think some information would be the best thing I can offer. So here are a couple of links you might want to have a look at. I like this particular site because it is meant for caregivers, and offers a lot of constructive advice at the end of the list of developmental characteristics:
http://www.allthedaze.com/development3.html
(I want to add to this that the spectrum for those developmental characteristics is for 2-3 years, so do NOT consider the developmental delay warning signs as significant until your child is a full three and a half. For example, it lists 'does not engage in pretend play' as one of the warnings... early twos may not do this either. Just thought you should be aware of that.)
Toddlers also thrive on predictability. I think leaving the option of the crib in the room is fine so long as there are no safety issues involved. If that does become a problem, then rethink. Ultimately, kids LOVE their routines, so choose what works overall and go forward.
Regarding bedtime and staying in bed: been there, done that-- what I strongly suggest is, once you have committed to the bed-- make a plan that you will be *teaching* her to stay in her bed, and understand that this is a process. When my son moved to his own bed and kept popping out of his room, I decided that we needed to make this a priority. So, we planned that one adult would be camped out in the hallway next to his room. I actually made a little bed out there, had my laptop, books, crossword puzzles (things I find entertaining) and was just ready to do my job of teaching my son. That first night, every time he popped out of bed, I put him back in with one word: "Bedtime." That was it. No other talking, no eye contact, just put him back in bed. No rewards, no cajoling, NO EXTRA HUGS AND KISSES (I put this in all caps because parents undermine their efforts by trying to be lovey and nice. This isn't about nice, this is about teaching them where they need to be. That this is a matter-of-fact reality-- when it is bedtime, you stay in bed. ) We had about five or six pop-ups the first night, and after the first time, I said nothing. Just kept myself calm and emotionally neutral (this is really helpful, not to engage or threaten, because it IS a big pain in the butt to do), and put him back in bed. I slept in the hall most of that night, because he got out of bed at one in the morning as well. The second night, he only got up two or three times, the third (my husband took that shift) just once..... So, be prepared, it may take a while, but if you are consistent, you don't let her stay up with you, you don't lay down with her-- NO payoff whatsoever for her getting up, she will eventually 'get it'.
You have a whole lot of development happening at this time. Here is also a list of developmental markers for potty training readiness:
http://www.iidc.indiana.edu/styles/iidc/defiles/ECC/CCR-T...
The font isn't great, but the information is spot-on. (note, the link at the bottom of article doesn't work.)
Hang in there, J.. You WILL again enter a season where your child has a sunnier disposition and is happy with life. Toddlerhood holds so many challenges for us as parents, so be sure you get some parenting breaks, be it a night out with your girlfriends or some time alone at home while your husband takes your daughter out. I actually told my husband that I needed some time alone and he found a cheap rate on a hotel room downtown for an evening on a Saturday. It was great-- met up with a friend for dinner, had a quiet evening alone, and met a girlfriend for breakfast before they picked me back up at checkout. Sorry for the length of this, but I believe strongly in sharing good information. Good luck!