Drakken Beasties

[Ruethgar]

So I'm looking to abuse Animal Friends with Awaken and custom feat allocation. I was wondering what the playground would think of as the better choice, a drained and then cured Murder of Crows with the Dracoonic subtype for a grand total of a 6d10 HD companion, or eight 2.25HD Draconic Ravens(may be replaced with Rat Swarm refluffed to Lizard or four Lizards instead for better look)? And what should I focus them on assuming all official sources, MotW rules for, let's be reasonable and say, Elite Array on them, and 2 flaws available? There is also a distinct possibility that it will be for E6, how would you adjust for that instead?

Bestial Nature: Magical Training
Frail: Human Heritage
Weapon Finesse: Bonus
1st: Precocious Apprentice(Eleamalific Fire Side Effect Furnace Within)
3rd: Draconic Aura(something)