Hey klm - sorry to hear about the delima with your situation, I know how much it can suck. I wouldnt rush to make a decision right now, but I would definately say whatever it is you decide, just make sure it's right for you, not him. Weigh the odds of selling and getting your own place vs keeping it and maintaining it, which ever is in YOUR best intrest would be your best vote.
It sounds like your doing good on your 180's, it took me a while to get the hang of it, it's hard sometimes not to react when you want to, but that's when things usually go bad, reacting instead of pro-acting lol.
As far as him calling before he comes by, I think it's a good idea, even if its only to give you a few moments to fix your hair :). And if your willing to make and keep boundries then this is a good one to start with.
I know your missing him and it hurts, and not knowing many people makes it hard to GAL - but do take time for yourself everyday to sort of step away from it all, even if it's 15 min. It's a big adjusment in your life and it's a process full of ups and downs, and suprises around the corner, so if you can remember to breathe every now and then it helps.