Annie, Jon and I are leaving right after work. So yes. You're more than welcome to join us either tonight or on the day of.
Dave, I'm no expert, I ran the Black twice, but I remember it pretty well. To my knowledge, the water is runnable in a variety of water levels. Based on AW, you need a minimum of 1000cfs for the section of Watertown to Brownville, we're currently sitting at 2250cfs and with the amount of rain forecasted for Saturday, I suspect this will go up somewhat by Sunday.
So I don't know what you mean by "the second half"... the portion that is proposed is Watertown to Brownville. You start in town, at the play hole called Hole Brothers and you finish after the Poop Chute, near a plant of some sort on river right. Personally, I feel quite comfortable running this from memory, but I am planning on stopping to check out Glen Park falls and Knife Edge. The rest is boat scoutable. Knife Edge is a little farther downstream of a few various class 2 drops before hitting the big portion, so hence why it's worth scouting to make sure you know the line. There's no turning back once you've started going down this section.
If Christian joins us, which I believe he is, he's also done it multiple times.