Follow up. I got some more accurate specs on the refrigerators this morning. Called an auto electronics shop we use from time to time. Sent the vaccine-mobile over there this morning and they got it dialed in. I don't know what they did but my guys are picking it up now. I know the original amp draw they told me was higher than it actually is and I know there are 2 1500 watt inverters installed in the van. Beyond that, I'm not sure what all they did. My guys are taking it directly to Overlake. Fridges are getting delivered and installed tomorrow.
I want to thank everyone for the time they took to help out. We can handle some pretty significant stuff here but this one was out of the realm of normal for us, especially on such short notice.