Wow, this addon looks sweet! Can't wait!
Incidentally, the B-1 can carry 84 Mk-82 with the MAU-93 low drag fin kit or 81 Mk-82s with the BSU-33 low drag fin kit. The MAU-93 isn't made anymore and with the BSU-33 fin, it's slightly longer and so won't fit on one of the upper stations of the 28 bomb carry module. When you drop a whole string of these, it feels like you're driving over railroad tracks in a car. With the larger Mk-84, it's just a big thunk since we can only drop one at a time per bay due to it being on a rotary launcher. When the launcher rotates, you can feel the whole plane move because of it though. Also, I doubt the Bone will drop any more dumb Mk-82s in combat because of collateral damage concerns. The Bone has just been using the 2000lb GBU-31 JDAM and 500lb GBU-38 JDAM weapons in Iraq/Afghanistan as of late.
Low level flying is pretty neat in the B-1 but it's of limited utility now because of all the low-altitude threats these days. We still practice it quite a bit but we haven't dropped any bombs at low altitude in combat. We WSOs don't like low level as much as the pilots because it's very easy to become airsick in the back with only the small side windows (we call them day/night indicators) for visual reference.
PBAR
http://bonewso.net