I forgot to mention here that back in November, 2015, I enrolled in the WSET Level 3 Award in Wine and Spirits.
Unlike the Court of Master Sommeliers exams beyond level 1, the WSET awards don't have a service component so they are actually far better suited to me.
I started with the Level 3 because it's roughly the same level as the CMS Level 1 (although does have a blind-tasting component).