Glad to see my list is so helpful to you!
If I may make a suggestion for some books to read before you get to The Fall:
Even though it is undoubtedly a TNG novel, you may want to pick up David Mack's Silent Weapons, the second book in his Cold Equations trilogy. It follows up on important plot arcs from Zero Sum Game and Plagues/Raise (which are DSN books in all but name), and features an event that's an important counterpoint to the events of The Fall. And, heck, if you like it, you might as well pick up Books I and III -- The Persistence of Memory and The Body Electric -- just for enjoyment. (The main plot of each Cold Equations novel is standalone.)
You may also want to consider reading the following novels:
- A Time to Kill by David Mack (TNG, 2004)
- A Time to Heal by David Mack (TNG, 2004)
- A Time for War, A Time for Peace by Keith R.A. DeCandido (TNG, 2004)
- Articles of the Federation by Keith R.A. DeCandido (Multi-series, 2005)
This set constitutes a distinct arc. I recommend them because I suspect -- but do not know for sure -- that The Fall may follow up on the events of this arc. (Also, I love Articles -- who can help burt adore a Star Trek version of The West Wing?)
So, if you've read up through Brinkmanship and you haven't already read the ones I listed above, my recommendation is to read in this order (star next to those I'm recommending purely for quality, not for direct plot relation to The Fall):
- Brinkmanship by Una McCormack (2012)
- A Time to Kill by David Mack (2004)
- A Time to Heal by David Mack (2004)
- A Time for War, A Time for Peace by Keith R.A. DeCandido (2004)
- Articles of the Federation by Keith R.A. DeCandido (2005)
- Cold Equations: The Persistence of Memory by David Mack (2012) *
- Cold Equations: Silent Weapons by David Mack (2012)
- Cold Equations: The Body Electric by David Mack (2012) *
- The Fall: Revelation and Dust by David R. George III (2013)
- The Fall: The Crimson Shadow by Una McCormack (2013)
- The Fall: A Ceremony of Losses by David Mack (2013)
- The Fall: The Poisoned Chalice by James Swallow (2013)
- The Fall: Peaceable Kingdoms by Dayton Ward (2013)
ETA: And if cost is an issue, I'd definitely check out your local library.