Pretty much anything in bag-and-board is "fine".
I'd advocate slabbing if it was a wraparound cover or something to admire on the back, but 'back in the day' they didn't really do that, so I wouldn't advise it here.
I like the aesthetic of bagging and boarding because you have the opportunity to handle the comic without wasting money (i.e. cracking a slab). As I've mentioned numerous times around here - I typically only buy Signature Series CGC products.
A bag and board in proper conditions will protect the current integrity of this comic, unless you plan on admiring it on a Bed of Razors, or around a fire pit, or plan on playing 'catch' with it, etc etc etc...
Whatever you do - it's a very nice looking book!