This is not a build.. just a concept I made that seemed to work pretty well. 25 wiz 13 cleric 2 monk (levels can be reordered) The idea was a theurge using a great wep of some kind.. most likely halberd.. or scythe. He would wear a robe to get his monk benefits as well the massive conceal bonus from ethereal and damage reduction from premonition. While in tensor's and divine power the character reaches 10 attacks per round, which is awesome when used collectively with the two-handed str bonus dmg and dev crit / overwhelming. Also, you can go cleric based, but I found contingency to be very useful. Input and opinions are apprecitated.
Looking at what you're trying to do with this build a Staffmaster should be the first quasi to look at. Similar defences to those you mention and much higher damage output. No cleric spells but am assuming you'll have very little WIS anyway. In fact you'll have very little of a lot of things trying to get decent INT & WIS for spells, DEX for AC (you're in robes with the monk levels) and STR for AB your large weapon.