Need abit Ov advice ?

[Sevs13]

Afternoon all currently sorting the underside Ov my cav t and I've now just about sorted the rear end out should hopefully b done by 2mrow,my question is I've checked the floor pan bk and front top side can only find 1 whole in drivers foot well very minor,from the underside everything looks sweet apart from front jack points there not rotten just been jack on wrongly over the years,I can c couple Ov little bits of surface rust around the drain hole and couple bits here and there on seam sealer ,my question is should I just strip the underside just to check ?or if it looks good just touch up the little area and just re coat the whole underside?thanks Steve