I can't recall if you are able to remove mage armor from an item or not but if so I'd do that and then break the second one trying to add resist. This is what I do with 95% of the stuff I find and keep from shame, try to enhance, break the item and thus save storage room. Once in a while I actually get something really cool that won't fit into a suit but it makes me smile. I can't tell you how many cursed legendary items have not broken but few insurable items seem to.