Following on from your first point of "Don't use off the shelf products" this applies to drawers too if you can find a JK specific design, If you want I can get you the details of the guy who built mine, everything is designed and made to fit like a glove, sturdy, no rattling and it's your own design to suit your own special needs to whatever space restrictions.
Attachment 1772Attachment 1773Attachment 1774
Hope this helps.