Evasion Pali ???

[Mapa]

I currently have a WF Pali 7 / Sorc 1.
My feats are THF speced and I have the first Lord of Blades enhancement. But I go with Scimi and shield if I am getting hit too much or am paired with a Barb.
32 pt build. I chose Mithril body at creation. Stats are:
STR 17 base 21 at level 8
DEX 12 15
CON 14 18
INT 8 8
WIS 10 11 I am working on it
CHA 15 16

My enhancements are geared to self healing and Aura, for AC and saves, at the moment, and will change no matter what I decide to do.
He is a lot of fun but sometimes he comes through a quest without a scratch and othertimes I feel like I am trying to melee with my elven caster because he just gets hammered.

My questions for some more experienced WF players are Should I:
1) Swap out my Mithril body for Adamantine and pick up some fighter levels?
2) Pick up 2 levels of Rogue and go evasion?
3) Stay with the plan and end up with a Pali 11 / Sorc 1 / Ftr 8?
4) Just stop whining and reroll a conventional WF evasion tank with Pali / Ftr / Rogue?

Opinions welcome.