I like this idea, but it costing just sounds like it will end up like the potions... Not being used at all.
Instead of it costing, make having more loadouts more cost meebles. (And to change / edit a piece in your loadout, it could cost 250 meebles each)
There should also be a point system base on how good the equipment is. Max being (choose max number here) points.
this is an example:
Diamond chest-plate = 3 points
Diamond sword = 2 points
Sharp 1 = 1 point
Sharp 2 = 2 points
Sharp 3 = 3 points
Bow = 1 point
128 arrows = 1 point
+/- I rather have them fix mini-games first. Nice idea.