4 deflags is usually too much, especially since most perms won't bother phoenixes.
For AI3, I'd usually go -2 deflag -2 SoG -1 Minor Phoenix +2 Fahrenheit +1 Phoenix
Besides the first 1-2 turns, you should always have enough for a Phoenix with a decent pillar draw.
Also adding Immoltion will mess up the mulligan, best to either focus fully on immo or leave them completely out.