I closed this morning!
The relief I feel is tangible, as it seems to be manifesting in a headache. (Figures, but I can take it. I'll have a little lie-down after I post this.) The seller is still being something of a...um...ninny, but all will be well. The house is mine. I've already bought the red paint for the front door. The appliances come tomorrow, as does the cable hook-up and such. My goal is to be sleeping there Saturday night.
I think the reality will hit me when I paint that door. I still sort of think that my lawyer's office will call and say, "Oops, we forgot to sign one more paper..." But I'll get over that too.