By the sheerest coincidence, I was intending to post an update tonight anyway (hence the double post), as I just racked my batch to secondary. Ended up with ~6 gallons *after* trub loss at OG 1.112, which has come down to 1.022 (and actually may continue to drop). Denny's yeast really chewed through this thing, although it certainly took longer than it usually does.
Color is dark brown in the siphon, inky black in the glass, with a mocha head so far. Considering it's getting mild head retention even though it isn't really carbed up yet bodes well for its future. Initial flavors are heavy roast coffee, which I suspect will fade with time, allowing some more chocolate to come out. The "raisiny" flavor from Special B is mild, but definitely present. I'm not a huge fan of that aspect of a lot of big RISes, but this one is balanced well by the coffee. Definitely looking forward to seeing how the oak+bourbon impacts it, as the vanilla from the infused bourbon should complement both the oak and the coffee nicely. So far, so good!