I am going for a DMM Persistent build to have a full melee / tank character

Playing human
Got a free feat from DM
Taking 2 Flaws
Starting level 5
So feat count is 6

Extend Spell, Persistent spell, DMM (persist), DMM (extend), 2x extra Turn
= spending 9 turn attemps for 48h spells, or 7 and a +1 spell slot.

I am thinking aobut Cleric level 1
with Dragon Lance variantes : Destroy undead instead of turn.
Adding Necromancy Domain : Rebuke undead ability
And Sun Domain : Turn undead ability
so 3 "turn attempts pool"
= 3x 3+Cha+8 turns/day

After that, and until any decent PrC (that would give full CL), I am not sure if
-if I should stay Cleric
-or go Archivist, to gain access to all divine spells (many awesome to persist, like bite of the wererat/bear...)

got 48 "buy points" from the normal system
so I can do pretty much anything (max int or wis, depending which class I play, prob spawn everything else between str, con and cha, with minimum of dex. Not realy aimed to 100% effectivness on shapechange or stuff like that, I want to have fun until I unlock those)

What do you think?