UP-armoring a vehicle to defend against rifle fire

I'm trying to defend against incoming semi-automatic rifle & carbine fire (likely .223) at a 45 to 90 degree angle to the driver & passenger side. I'm trying to protect against a somewhat coordinated roadside ambush. It's hard to explain but I have a strong gut I will face hostile fire from the side of my vehicle at some point. Yes, I know, "don't go stupid places with stupid people doing stupid things at stupid hours" but when SHTF, I may have to roll a hard 6 to make it to our fallback location.

That being said, does anyone know of a cost effective way to source, cut & hang/weld Brinell 500 steel plate (aka AR500 or Hardox) or an equivalent to create armored doors? I know I may have to add a 3rd hinge. Does anyone have a ref for the Southwest region (CA,NV,AZ)?

Unfortunately for windows, it looks like bulldog will only cut side-glass for 2003-2012 year vehicles. Does anyone have a suggestion on cost-effective cut glass in the southwest?

https://www.bulldogdirect.com/bullet-glass

I'm shooting for a final configuration that will utilize:

> ARB (or equivalent) front ram bumper (also good for deer hits/ protect the radiator)

> AR500/hardox cab protection on the doors and areas where our legs extend

> Bulldog or equivalent door glass (if I can afford it)

> front windshield and rear cab glass reinforced with Clear Inc 4-layer safety tint (bomb resistant) - no retail distributor that I could find though?

> occupants wearing E-Sapi plates, side sapi's, and upgraded PASGT's with first aid kits (IFAKs) & celox at the ready.

> rear of vehicle loaded with supplies, aux tank, and 2 spares wheels/tires with curb weight right up to the GVWR.

Does anyone have any suggestions or comments? I'm open to another material that will defend against rifle-fire.

Much thanks in advance. And THANKS to TURD for this place!