Sound deadening, Carpet, and floor pan repair questions

I'm in the process of doing the inside of my Dart with Dynamat products. I am particularly in favor of using DynaPad on the floor, firewall. This stuff is thick, made of 3 dissimilar layers and is not adhesive backed. On the floor you can lay it down and take it up with the carpet if you need to do anything attached to the floorpan. I'm planning to run it all the way up the firewall where the original board and insulation stuff was. I saved the old boards and removed the fiberglass insulation and will use them to support the non adhesive dynamat using the factory style plastic push through anchors. Then I'll use dynamat on the roof, doors and quarters.

Two ideas I'm considering that I would like thoughts on:

Since the car is down to a bare shell what are the pros and cons to putting the adhesive dynamat inside the doors on the inside of the outer door/quarter shell, rather than on the inside door shell right under the interior door panel?

Will it work to insulate where the board trunk divider is and the package shelf, rather than doing the trunk? Since I don't plan to ride in the trunk, it seems like unneeded expense to do the inside of the whole trunk.