My steering setup has been working very well; I think going with the bronze bushings and steering box sector shaft as the idler arm was a good idea.
However, if you want the steering to work even better, I would recommend going with a swing style or cross over style setup, where the steering linkages are directly in line with the axle pivot points. Mine are a bit shorter, and as a result you get some toe change at full droop/compression. I did make the driver and passenger links' lengths match their respective beam lengths; the drivers' side beam is a bit longer, so I made that link a bit longer as well. I don't recall the measurements, but I kept the driver to passenger length ratio the same so that each side would get equal toe changes during the suspension cycle.
Are you planning on any lift? I have about 5" and am using factory XJ pitman arms(on both the idler and steering gear) and 1" offset tie rod ends, and my steering angles are quite flat, but not perfect. Without any lift, I think you'll need the center link to sit a few inches higher than mine.