4 White Mages...

[Martyr]

WMs with 275 HP are around lv...

20? 19?

I want to diss that, but, actually, it's only a few levels higher than average for Kary.
(I would say that normal lv. to beat Kary with an average party is 15-16)

I beat the game with 4 WMs a long time ago. I don't remember it being too hard because
1. There's so much undead (Easy to Kill)
2. Powerful items like Zeus, Thor's, Mage Staff etc. keep you alive through the water Dungeons
3. FADE is the White NUKE.
4. Plus, of course, all the healing and resistance you need.

It's a fun party if you're into it.

I like my Silver Sword though. rm/wm/wm/wm

Edit: At what level did you beat Astos?