It’ll stop AP rifle ammo? What caliber AP ammo? I wouldn’t trust Level III with plates that far. Granted, I’m not current in the subject, but that seems like a tall order.
I want a vest that will stop 120mm APDSFS. I’ll look like a 30 foot in diameter beach ball while wearing it. I won’t be able to walk in it, I’ll have to be rolled everywhere by a team of assistants. I’d only be able to wear it in arctic conditions, elsewhere it’d be too hot.
Get the model with built-in A/C ... that way you can even wear it in Arizona in the summer. A/C adds less than one foot to the diameter. :-)