Finding values in multiple headers using an Array formula

Hello,

I am trying to work with data that has multiple headers and multiple similar values using an array formula. My goal is to use three criteria to obtain values and arrive at a sum.

The multiple headers contain dates of product arrival and the columns contain sku's and PO's (both containing multiple same values).

In this case, I'm looking to find anything arriving on the Nov 10 date on a CA PO.

My formula looks like this:
{=SUM(IF($C$4:$E$4<=$H$2+5,IF($B$5:$B$22=$G5,IF($A$5:$A$22<"D*",$C$5:$E$22))))}

I'm unable to obtain values from the latter headers. I have attached the sheet for reference.

Any help would be greatly appreciated!