Well I suppose everyone has their own preference, so far I have done:
Air law
Met
Human perf
Nav.
Currently working on Tech and Planning as a pair, since there doesn't seem to be a clear division between them (in the Air pilot's manual vol.4 anyway). After that there's only R/T, which I hope to have pretty much learned by the time I come to do it anyway.
Got until end Apr '09 to get the last 3 finished
Gav
www.madgav.org