Similar situation except for timing. My D80 died after being stupidly dropped on a tile floor in August, thus accelerating my upgrade by a year or so. I also damaged my 18-200, but that was minor and is already repaired at KEH. The good news is I put in a first day order at Amazon, so maybe I'll have the D7k "soon". The bad news is I've been without an SLR for two months. I really miss it!
I was also mulling a 300s, but the feature set of the 7k seems close enough to everything I need that it's the better choice. The 300s has a coupla more real buttons than the 7k, and the 400 will most likely as well, but the video is a plus for me as I'm only an occassional video'er and have no interest in carrying a camcorder. I'm also excited by the two custom mode settings, which will allow me to set one for landscape and one for grandchildren. Then change to "A" when I hand off to someone else. The smaller size is also attractive; as much as I like the macho look of the bigger cameras, and can always appreciate more buttons, I like the ease of carrying the smaller ones.
I borrowed a D60 for a foliage weekend in Vermont, and spent half a day figuring out how to use it properly. Although all of the cameras in the line are similar, the differences are enough to make you nuts if you're not ready for them (little things like shutter release mode reseting after each shot on the 60, and having to use a shift key to set the apeture with the single wheel). Aside from that, I've been shooting with my S90 and mostly getting by, except when chasing the grandkids. They just move to fast for the focus on the P&S.