Help with Pre-lvl 50 rotation for BLM

[MrGrey]

Hey there. I'm here to ask about the rotation of a BLM that has yet to reach lvl 50. I write this because during my time as a black mage there has been very little need for the AoE skills that (according to people in other forums) make up the bread and butter of their whole thing.

Up until now I've just been using the standard Thunder > Fire > Until low MP then Transpose > Blizzard until MP up. Rinse repeat. And the occasional sleep when it feels appropriate.

Now I'm lvl36 and I haven't really felt the need to change it. It works fine in dungeons and nobody calls it out. And whenever I try to use AoE (usually starting out with Fire 3 and then switching to Fire 2 until Mp out) it does rather minute damage compared to the standard fire damage. Concentrating on a single enemy to get them out of the game as fast as possible seems to be more effective.

All other rotation suggestions I find are for lvl50. Is there a better rotation for my current level? Any advice would be appreciated.