Definitely do a dual mono track as indicated above a single track while more accurate to older theaters is less impressive due to center channels being less accurate than tower speakers and by having less power from receivers.
Also most theaters ran mono through several large speakers at the front of house anyway so single channel mono isn’t really all that accurate.

The general description used for home video is 1.0 or 2.0 mono depending on the channel type used. No cover will list dual mono. The vast majority of studios still use 2.0 to this day, 1.0 was generally only used for space reasons until Warner Bros. started using 1.0 for many of their classic DVD titles in the mid 2000s. Then Criterion and a few other labels started using 1.0 mono on Blu-ray a couple years ago, usually for space so they could fit extras on the disc.

Still so freaking excited for ROTP.