The plan looks pretty good to me. DivotMaker, though, suggested putting the butt on the bottom and the brisket on the top. I suspect that the butt will finish before the brisket, but I don't know you smoker. I typically need a little more than 1 hour per pound to get to a 195IT when smoking at 235F, and it sounds like you have a similar experience. My only concern about your plan is that you need to get the brisket off by noon in order to turn around for the ribs...if you are confident that 14 hours will handle the brisket, then all is well. If not, then perhaps starting the brisket/butt earlier (say 8pm) would give you more wiggle room. Good luck!