Congrats, QQ, that sounds like it was a pretty big undertaking.
Dd was up at the crack of dawn this morning and I gave her a lift to school with her rather large pile of prepared materials for the exam. She was positively chirpy. Hope today goes according to plan and she doesn't come home in a state of despair tonight.
I too am a member of the wide-awake in the middle of the night club. All this crepey talk of MILs: I spent about 2 hours lying awake last night remembering the decade when I had a MIL who was - according to a couple of people who know about such things and who had known her a lot longer than I had - quite possibly a psychopath. I have no idea how I maintained my composure in the face of stuff she did. I certainly wouldn't be able to do it these days. After an age frothing quietly to myself about a bunch of historical issues, I moved on to my favourite night-time topic: 101 reasons why I can't get a proper job and will be entirely incompetent if I do and generally have nothing to contribute to society, blah, blah, blah. I finally managed to get my mind to shut up and go back to sleep about 30 mins before it was time to get up. 
Herbs, they would indeed be crazy not to snap you up, as BTM and QQ say. Sorry I'm not very good at giving advice on thinking positively (see above
), but you have so much to offer and lots of enthusiasm for what you want to do - this, along with an understanding of the challenges you will face, is what they want.