The Breakdown is a blast and a half. Glad you're going to join the fun/madness!
Here is a tip: After a couple years of sucking dust on the ridgeline trails down the to hidden cabin, my wife and I started bringing bandanas to cover our mouths and noses on those sections of trail. Yes, we look like cheezy old west outlaws, but it beats spitting up dust afterwards. There has been a bit more rain this year, so hopefully the moondust won't be as much of an issue. But I'm still bringing my bandana.
Other than that, ride at a steady pace, eat regularly, drink a bunch of water, and make sure to get back before they run out of fried biscuits.