I gotcha, Hydra is out. If you okay Practiced Meldshaper, I'd probably get a Wyvern. If not? ummm I got some book scouring to do.
And I can't still fight without the zombie. I can shoot acid! and cast 1st level cleric spells!
So you're pretty much going to be a Pokemon master?
Anyway, what exactly would Practiced Manifester do for you right now? You're only at 6th level, and Wyvern has 7HD, so you're not going to be able to start with that regardless. I'll definitely allow you to take the feat, but I'm just letting you know that you're restricted from the Wyvern until next level.
Also, to answer a question from earlier, Necrocarnum Zombies specifically retain all their natural attacks. They lose any feats derived from class levels or racial bonus feats; It says nothing of feats derived from HD gain, or rather, derived from character level; In fact, all the examples given have feats gained from HD. This also implies you could have a necrocarnum zombie who has class levels. >_>
Don't get too attached to the concept of polymorphing your zombies and using psychic reformation on them, or similar tricks (you wouldn't need to anyway, as the statement above shows). Remember, you've got to make sure you never unshape the Circlet which powers them, and if it ever gets unshaped (such as through Unshape Soulmeld), it becomes a lifeless corpse again. You're also subject to magic-incarnum transparency, as detailed in the book. Should your soulmeld be suppressed, the zombie temporarily goes lifeless. Don't rely on it entirely.
Did you have any thoughts on the other ideas, by the way?
@Chemus: Who knows what they were thinking.
Anyway, at only half your hp, you won't likely want your familiar running around in combat too much anyway, though a blink dog technically shouldn't get hit most of the time. Still, one lucky hit and it goes smoosh.
A blink dog familiar however requires a +5 BAB, as mentioned in Complete Warrior. A minor oversight, that book's feat has different Prereq's than the SRD and CScoundrel versions. They're technically more guidelines, and you could essentially have any similar type of creature as a familiar.