You could cut them in half
+++'s >> More bark, faster cook, by some
----'s >> Easier to possibly dry out on the smaller pieces
I run these @ 260 ~ 275f and they don't seem to suffer at all....if you want an all at once ending, add the next smaller one in just a tad later, stagger by 45min. / pound.....or run higher heats in different cookers.......
It's easier for me to pull them off & wrap at different times if they get done a bit apart, but your list of other things to do may be different than mine.....
At the slightly higher heats mentioned above, 12 hrs will work, if you go @ lower heat, allow 1:00/ pound, or even a little more....this would be if left whole.......
If you cut they'll go @ faster / pound.....don't know how much, that's harder to estimate.....are they bone in?
That's harder to cut....
Does this make sense, or do I need more coffee?