Hey there 116i!
Doing my PPL for Heli's.
Did my first exam in December last year (2012).
Chose to do Flight Planning first.
Second exam was HP (Just wrote it last week.)
I prefer getting the "big" subjects out of the way first.IE:Principles of Flight
Aircraft in general
Meteorology
But do what you think would be best for yourself.
Different strokes for different oaks!
Happy studying