What's the concern over using your rear remotes?
I'm doing that with my NX: I'd spent enough on other stuff (like implements) and couldn't justify any other solution, especially given what I expect my use of this function will be. I'm probably at $350 for my parts: I went Cadillac on everything (high-end hoses; a bunch of disconnects; protective sock on much of the hoses; hose saver etc.). I have three rear remotes, in which case I still have one remote available (have an hydraulic top-link).