One question about the AC line routing, are you going to make some kind of cover/shield to protect them from road debris? My luck, a rock, or even worse, a blow out would take out all that hard work.....
The S/S lines are over kill for this job as they are rated for over 2500 PSI working pressure. I think they could take the shrapnel as good as the fender has for over 45 years. The AC lines will get a 3/16 neoprene insulator that will also help protect them as the undercoating protected the inside of the fender. Thank You! Pat