Well, I'm just not sure we need Okafor. Right now, we have J.O, KG, and Glen. I think we need one more big, but he doesn't have to be an impact player, I think (Mbenga, Earl Barron, etc).
Jermaine O'Neal, in one of his healthiest seasons, played really well defensively against LA when they came to MIA last year, registering 4 blocks and helping MIA win.
Couple this with the fact that MIA didn't have any significant height and experienced help for J.O. while he was in MIA.
I think that a Healthy J.O, paired with KG, and Glen absorbing some minutes from both, can sustain us in the short haul.
And help us in a series VS LA. Getting Perk back, even at a portion of himself, seals the deal for us.
We don't need Okafor.