All this is a real boondoggle and a waste of money just to stay in place. Put a rack with 3 17-tube 70mm rocket pods on each AMOS turret roof for rapid area suppression missions. It will start to resemble Groupment Mobile 100 on Highway 19, even with air cover. You have to absorb energy somewhere, or go with something smaller. One must take into account reality every now and then.
Guns reach further than howitzers of the same bore diameter, due to longer barrels.
As a Marine who has deployed to hot climates, I can attest that body armor worn over the utility blouse is hot. Just add some durable denim sleeves to the body armor vest and leave the utility blouse back in garrison. Apparently, Navy leaders learned of a near 1999 crash during shipboard testing when a V-22 almost flipped over.