... Some kind of assumption that may be wrong?
The board has you (currently) listed as Posts
... which is usually technically bad english wrong.
Heck of an opening post, garnering a marvel/minmax No Prize, right off the bat.
Somebody in the party has to have had Scribe Scroll before you get to level 12.
Hefty use of retraining spells, and/or somebody in the party having a Psion 7 cohort.
You're slightly behind on the usual suspects for powercasting.
You can always make up for that with Assume Supernatural versatility.
And then go Improved. Polymorph Any Object is especially effective
if you've got a Wis Cha build = right up your alley.
Sorc spell picks of divinations and then otherwise top picks, should be
the starting point, but filtered for all that druid/bard goodies you've got.