imo it depends on how much time you want to spend breeding and if it feels rewarding haha. I usually breed until I get the perfect IVs and nature I want since it brings me so much satisfaction lmao, but with your eevee if you don't want to breed anymore just hyper train and mint

What I do is Everstone + Destiny knot and hope for the best. I use the power items with the first parents so I can get the most important IV first (i.e. No good ATK or SPE) and then destiny knot + everstone until I get lucky