The thought of binding pre-52 and and New 52 material in the same bind proved to be too unholy for me, so I've gone in a different direction by incorporating the Bat Lash mini as follows:

VOL 1: RETRIBUTION
(27 issues - 1" and 1/8")
Jonah Hex #1-26
Bonus: Booster Gold #3

VOL 2: SIX GUN WAR
(27 issues - 1" and 1/8")
Jonah Hex #27-52
Bonus: Weird Western Tales #71

VOL 3: TALL TALES
(26 issues - 1" and 1/8")
Jonah Hex #53-70
Bonus: Bat Lash #1-6
Bonus: Batman - The Return of Bruce Wayne #4
Bonus: DC Holiday Special 2010

So, at 1" and 1/8" each, the final books will end up being between 1" and 1/2" and 1" and 3/4" when the spine and casing is attached, which should still enable me to take advantage of H&R's Jonah Hex logo stamp (which measures 1" and 1/4").