The stock JY steering is pretty strong, unlike the TJ or XJ steering which are notorious weak. If you are leaving it spring under than you should be good. if you where going to go spring over, then there is a lot that needs to be done!
When I when through my axle I added axle tube seals, chromoly shafts, blank off plate on the axle disconnect, new internal seals and new ball joints. the brake were decent and they are a wear item so I left them along and waited to replace the pads when they got low. I also left the unit bearings alone and waited for them to fail before changing them out. I have bigger tires so I wear them out faster, I would say I get about a year and a half out of one.