A couple roller bearings and a thrust bearings still will not accomplish the articulation required. You would at a minimum need a spherical bearing plus some sort of compliance to allow translation alond teh stub strut axis. Draw up a free body diagram plan (top) view and look at the axes of rotation for each the frotn pivot and stub strut
Sure, bearings can make it ride smoother on smooth roads, but not over bumps, expansion joints, potholes, etc.
SS is weather proof? sure, but dust/grit will get in and wear them in short order.
There are reasons you dont see bearings, spherical rod ends, etc. in production car suspensions...