Antennas vary greatly in quality although they all look the same. A lot of the pro's are going to the 20 footers. Pedro-keep those hooks sharp and be sure rear hook is at tail of crawler. And perhaps add a little beef to the hook set. Linda-hard to tell by looking.
Cable is the best indicator the thicker the better.
Want to see some pics of 10 lbers you get on sharp harnesses. How important is insulating the radio wiring from the other wiring, etc. Loran was tough on interference because frequency was very close to vhf radio. Depends -it's a lot easier at our place have all our tools, access to a sheet metal shop and suppliers for anything that might pop up. Most important thing in rigging boats is to take as much time as you need before drilling the 1st hole.