A good warm up for Maat is to do the
Pulling the Strings ENM in Movalpolos. Though the level cap is 60, it's still high enough to learn Raging Rush. You won't be able to use Opo opo necklace to build up initial TP, so you'll have to rely on good old melee to build it up. The Fantoccini has a lot of HP, so it's quite common for it to survive 2 Raging Rushes + Fragmentation damage. But it should go down after a few more hits beyond the SC.
I say
should since the biggest difference from the Maat fight is the sheer randomness of the Moblin Fantocciniman. The Moblin causes random effects to occur through out the fight. Sometimes it benefits you, while other times it benefits the Fantoccini.
So far, I'm 7-0 in this ENM. I hope the Maat fight is as easy.