FoxWander
Adventurer
There's a lot of good advice here so far, but I've got a few thoughts to consider. For your specialist wizard, I'll second Asha'man's advice on dropping evocation instead of conjuration. Mainly because conjuration has better spells overall instead of just blasting, but also because with your split focus your CL will be too low to give evocations the punch they need to be worthwhile.
I'd still go with Mystic Theurge over more Cleric levels. Since turning is based on cleric not caster level you'll never have the 'oomph' you need to affect undead of your CR anyway (and I'm not sure what you mean about your "# of Feats" above). You're better off using your turn attempts powering divine feats, especially since earth and plant domains give you even more turns per day. Remember- many of the divine feats don't specify what type of turn attempt must be spent, regardless of what prerequisites they have. DMM Reach is quite useful and not nearly as cheesy as DMM Persist. Sacred Boost and Sacred Healing will help in your healing role also.
One last thing, with your plant theme/pseudo-druid thing going, try to talk your DM into giving you summon natures ally on your cleric side instead of summon monster. Even better, see if he'll allow Greenbound Summoning along with it (from Lost Empires of Faerun). It's a little stronger at lower levels than normal summons but you could argue it makes up for your lack of casting punch before you get practiced spellcaster.
I'd still go with Mystic Theurge over more Cleric levels. Since turning is based on cleric not caster level you'll never have the 'oomph' you need to affect undead of your CR anyway (and I'm not sure what you mean about your "# of Feats" above). You're better off using your turn attempts powering divine feats, especially since earth and plant domains give you even more turns per day. Remember- many of the divine feats don't specify what type of turn attempt must be spent, regardless of what prerequisites they have. DMM Reach is quite useful and not nearly as cheesy as DMM Persist. Sacred Boost and Sacred Healing will help in your healing role also.
One last thing, with your plant theme/pseudo-druid thing going, try to talk your DM into giving you summon natures ally on your cleric side instead of summon monster. Even better, see if he'll allow Greenbound Summoning along with it (from Lost Empires of Faerun). It's a little stronger at lower levels than normal summons but you could argue it makes up for your lack of casting punch before you get practiced spellcaster.
