I set my keys up like
bliz 3 = T
Th 2 = R
Fire 3 = E
Fire 1 = Q
So rotation is simple as T,R,E,Q
I throw thunder 3 on the 4 key for thundercloud proc ( the key above thunder 2 )
Other keys:
Fire 2 = C
Flare = X
transpose = g
scathe = f
sprint = v
and this has barely used any of the numerical keys...which I use to hold manawall/ward, swift/surecast, convert/mega ether.
