Well have not tried PVP yet but is it because your cross class skills as thm?
I would venture to say Blm is far better, scathe is rather useless even as BLM
Also curious why Aero? You would be better off with thunder 2 i would think (thundercloud is just awesome)
Again i have not tried PVP so i may not be accurate in my statement
I did however like cure rather then what we get as blm