you definitely should get out the grease gun, and note that there's so many zerks a quik-lube place will want to charge extra

don't miss the ones on the pedals and U-joints
what I been thinking about for my current panel project is cutting away the inner panel below the rear floor, the quite similar fleet bedside that's a single skin never rots like the panel, that pinch weld is the trap and can not be cleaned out, and spraying any rust proofing or paint in there can't deal with the 50-60 year collection at the bottom, which can be a couple inches deep and quite wet
Bill