You choose great option to laminate paper wallet i must do it with mine, because this way they will last forever almost compare to paper alone
I really advise doing so. Spill something on that paper alone and you're done. Plus, laminating it gives it extra durability. Of course, you should always have more than one copy. You never know what might happen.
I don't know if it is just me, if you fiddle with the edge of the plastic too much, the lamination plastic can be damaged and the private key can be unreadable.