Making my first attempt at the marathon distance next month— planning to run 8:00/mi. for as long as possible. Is it worth grabbing a pair of Vaporfly 3’s? I can handle the price if it’s worth it, just not sure if it helps at such a “slow” pace. Obviously I’d test them out a couple times before race day. I’ve been training in the Brooks Ghost Max. (Nike’s other super shoes are currently unavailable in my size.)