That’s the thing with major life events, whether you feel positive, negative, or ambivalent, they are stressfull. I think all of your reactions so far are understandable.
My Dad is coming at it from the opposite direction as you, but still arriving at the same place of apprehension. Other than for a few years after divorcing my mom, he has always lived with somebody else. Now he is living by himself again, and getting lonely. I’m encouraging living someplace with easy social interactions, because he will make friends in that kind of setting.
Right now he is working through the emotions of giving up his house. This has been on going for years, but instead of a “someday” thing, is now a “soon” thing. Your situation is ripping the band aid off quickly. I guess much of it depends on if your personality is one to want to get it over with quickly (as quoted earlier), or to ruminate on it, until you are at ease with the decision. Or, you know, ruminate on it until it drives you bonkers.
To lighten the mood, here is my (sort of) funny Wings story.
Way back in the mid-90s (time period is important) I was at a conference on the east coast, and spent much of the time hanging out with some friends from the UK and their colleagues, who I had not previously met. One of these new (to me) people was going to travel to the west coast after the conference to visit her sister. It turns out her sister was married to one of the two main guys from Wings.
On the last day, she was having trouble calling her sister long distance (time period) on a payphone (time period), so I loaned her my long distance calling card (time period). She called her sister, arranged for airport transport, etc., and I assume all was well.
A month later I get the statement for my calling card, which contained the $0.95 call, and the guy from Wings home phone number. I never did call him, but it was fun to know I had that power.