I'd say get'em....but I'd figure on a spare too mounted on perhaps a cheaper "steel" rim unless you wanna pony-up for duplicate wheel. I'm thinking that if you only buy "4" and encounter bad luck along the way buying a replacement tire down the road might entail some "back-order" time. I'm not sure how readily available those tires are. I seem to remember someone having availablility issues with the Nitto Grapplers maybe???

The only other option is to check into a rehab clinic for "mod withdrawl".