My problem is, according to the reading order I found online, the next title in order is "Divided we Fall," a four part miniseries comic book series.
Well, you already missed reading "n-Vector", a DS9 comic mini-series that introduced the Bolian female, Tirus Jast, prior to her involvement with "Avatar" Book 1!
AFAIK, I can't download comics anywhere online.
IDW does downloadable comics, but for previous ST comic publishers you need the "Star Trek: The Complete Comic Book Collection") DVD-ROM (excluding only the "X-Men" crossovers) from gitcorp
. Just recently, people were saying it's still available from online sellers.