This is strictly my opinion, and it's more a matter of beekeeping "style" than anything else, but I'd say your plan borders on being obsessive. In my experience, there are always colonies that go great guns, and others which just seem to be dinks. Trying to equalize them at the level you're talking about seems overdone. If I've got a particularly weak hive, I'll certainly add a frame of brood to give them a boost, but I do it more "as needed" rather than a planned equalization of all colonies. Sometimes a weak colony indicates I need to requeen rather than just boosting population. Other times, I leave the mega-colonies as-is because they're producing lots of honey.
So, there's nothing "wrong" with your plan, it's just a matter of finding your own style of keeping bees, and what works best for you.