Stick with the steering box and hydro assist. Since your dead set on links and the axle as far forward as possible you may be able to find a way to run the steering arms and drag link behind the axle and use a forward swing steering box to do the steering. People do this on chevys with 52" spring swaps to avoid having to move the box and push the axle forward, but those a re leaf springs so nothing to really get in the way of the drag link but the links would be smack in the way on a linked setup. Regaurdless you can push the axle pretty far forward and with a large enough tire you could get a very good (close to 90*) approach angle on a standard steering setup.