http://www.creationkit.com/Inventory_Tab

I'm really sick of my spouse going to sleep in full armor. It's definitely an immersion breaker. Does anyone have a solution to this? Thank you.

you may have some success using SetOutfit (may also need EvaluatePackage) in the papyrus fragments of the package's begin and/or change sections

I'm a PHP developer, never worked with papyrus, I'd be fairly lost.