You bought a Cookshack my man, why would you want to wake up at 4am to start the butts? Start them the night before. When I cook butts for dinner time, I'll put them in before going to bed, 11pm or so at 180*. The next morning, when I wake up and grab some coffee, I'll crank it up to 235* and let it go. If they are done early, like everyone says FTC. They'll stay good and hot for several hours. Don't pull them til you're ready to eat.
As for wood, I'd throw in another chunk or two when you put the ribs in. The other chunks will probably be gone by then, or if they're still putting out smoke, then check when you put the beans on. And as Pags says, stir your beans a couple of times to get some good smoke flavor into them. And remember the toothpick test to see if the ribs are done.