You may be able to do without the 1" transfer case drop if you installed a 1" MML. However, you also might not. It's really a crap shoot. Some get lucky, others don't. There is no 100% for sure answer on this.
Remember, if you add a 1" MML, you'll ideally want to add a 1" body lift as well. If not, then you'll need to re-locate your fan shroud, as your fan will sit 1" higher, and contact the fan shroud.