My AST is so weak, why?

[Anova]

you know what though, even though i only use benefic II and not benefic I, i never had MP problems or problems pulling away agro from tank

That kind of makes me realize how awesome those tanks were...

Anyway, do what works for you. Just keep in mind that using benefic I and benefic II will be useful to increase your burst healing and burst dps.

Also, please at least upgrade your weapon to an i100 or i110 at Rowena's or even i70 at your GC. There is a huge spike in hp and damage after level 50 for all monsters, so the actual difference in healing power and damage is pretty huge between level 42 and 52. I promise you'll at least level faster.