Everything is going well, I am reinstalling all the programs I need for "everyday" stuff like email and paying bills and whatnot. And of course going through the process of getting them set up the way I want them, which is a pain but necessary.
I've let Windows Update download and install everything that it wants to, all the hardware drivers check out as up-to-date. I've rebooted several times and so far, no problems.
Still have to format and partition that second HDD and that will probably be the last thing that qualifies as a "nail biter" just because I had such a bad experience when I tried to add it after the initial OS installation. But since it's connected and showing up in Disk Management and I'm not having any problems I think it will be okay.
