I've decided this will be the Jan 21 sailing for me since the Jan 14 sailing is nearly identical to the itinerary I just got off of (even though I've also been to most of the Jan 21 ports, too, but it's been longer).
I have a few good leads for potential cabin mates but noone has committed yet so I'm still looking.
I will try to remember to keep checking here and I will update the thread once I have someone committed!
Thanks y'all! :-)