I think that's a good way to go but I might add a portion at the start of the boil. I assume you might want something wort like when you are boiling hops. maybe it doesn't matter? sounds like a good experiment!
For years I was under the impression that you needed wort in order to isomerize the hops. Furhter research makes it look like temp is the factor and water would work as well as wort. I'm not ready to declare that definitive, but I'm leaning that way.