Congratulations, Air Law is one of the tricky ones for sure!
I did mine in the following order, I tried to break it up a bit, so all the hard(er) exam weren't taken at once, it all flowed very nicely (in bracket is my opinion!
)...
>Air Law (Hard - a lot to remember)
>Meteorology (Hard-ish also a lot to remember)
>Human Performance (Easy-ish but very important, a lot of common sense)
>Aircraft Technical (Medium - a lot to remember)
>Navigation (Hard-ish... especially if you take too much time planning the route)
>Flight Performance & Planning (Easy-ish if you're good with numbers)
>Radio Telephony (Made easy as I'd been using it for a long(ish) time before taking the exam)
Worked well for me anyway, sometime ago now though. Good luck with the rest of them!