Your wife is awesome indeed. Can you ask her to sort me out with a 600mm f/4?
Actually, sometimes I wish I'd gone with the D200 when I bought the D80. At the time, I hadn't envisaged trying some older AI lenses, which the D200/D300 will mount and meter; for a while CaptureNX was a freebie with the D200 [would have shaved £120 off the difference]; and the better build of the D200 would have been icing on the cake.
The D300 has even more knobbage than the D80, for even better realtime control. I just used my dad's 350D [my first D-SLR camera, sold to him - for peanuts of course], and couldn't figure how to change to a single AF point and spot metering [which is my preferred method of working in Aperture priority mode]. Dedicated buttons for WB, ISO, Quality, Drive mode, focus mode, AF mode make life so much easier - the more functions you don't have to dig menus for, the better.
D300 it is for you, then. You made the right choice. ISO 1600's very usable, evidently.
Now, mustn't look at the D700... mustn't look at the D700.... mustn't look at the D700....