(PSP) "Jeanne D'Arc" I need some party contruction advice please!

[Klorox]

Hey guys, playing the AWESOME game, "Jeanne D'Arc" on my PSP. I keep reading about how great a tank Rufus is, but I can't seem to find room for him in my standard 5 man group.

Here's who I'm currently using, who would you suggest I swap out for him?

Jeanne (sword weilding tank, a little magic too)
Lianne (my best wizard/healer, and a pretty good swordswoman)
Gilles (great spearman, he's got that really cool armlet too)
Colet (wow, am I glad I gave this thief a chance! He's hardly ever hit in combat, and almost every attack is a critical hit!)
Marcel (this archer dishes out TONS of damage, and in a tactics game, a consistent ranged attack is certainly welcome)

I'm currently at the point (pretty early in the game) where I want to take down the three forts. I just added La Hire and Rufus to my party.

Thanks, in advance, for any and all help.