Looks good, I'm in the same boat on my 1990 centurion. Swapping to radius arms and coil overs, with minimal lift. I have it to the point right now to where I can actually lower it over stock by about 2 inches with the mods I have done. I kept the original engine cross member, but it has been trimmed to clear the track bar (I'm adding an HSS cross member just like you as well), the front axle is a dana 60 and I have cross over steering, but i had to swap the drag link to under the steering arm to gain frame clearance. Track bar mount, well I started with the same ruff stuff bracket as you are using, but because I wanted to match the angles exactly with the drag link (the drag link is not parallel with the axle because of the forward position of the steering box), I ended up tossing it and building my own (see attached pictures).
Hope this helps.