For whatever reason these are all flat keys... anyone got any sharp suggestions? 
Well, there's a lot of Bach written in E major (WTC I prelude) or E minor ("Air" from the E minor partita), and lots from everybody written in G major (Beethoven, Scarlatti, Bach).
I don't really know how to accurately grade for the OP, but the two JS Bach pieces mentioned are about as easy as you can probably get.
I don't think, sticking with the "sharps" theme, I remember much that's extremely easy in A major or B major, although I'm sure pieces exist in some primer somewhere.
I'd just read through the suites/partitas of Bach and the WTC and find ones that don't have much ink on the page and read those.
That should be plenty of reading practice.