your objective here is to survive till wildshape so i would take combat casting to avoid AOO hits if your stuck in combat.

the other reason is that once you obtain wildshape(and take natural spell so that you can cast in animal form) you will be in combat all the time and since you can still heal yourself combat casting is even more valuable.

on the note of your stats i would have placed the 15 in cha as once you obtain animal form you will not leave it at all and it automatically replaces your physical stats (str, dex, con)

another feat i would recommend is in complete divine im pretty sure. with just a few ranks in the healing skill you can gain the ability to spontaniously cast healing spells the same way as a cleric. making you a bear with insane str and con who can cast in that form and sacrafice spell slots to summon monsters or cast healing spells.