I'm sure you're already read this somewhere, but you can crank up the heat and cook a butt in 6 hours with no ill effects.
No need to overnight it.
Modded Brinkmann Gourmet. Basic UDS. Rescued 22.5" OTS. SJS Mini-WSM. Stubbs. B&B Oak Lump.
Cannondale 2009 F8 (for burning off all the great BBQ)