The vinyl coating prevents scratching from every day use.
I hung 5 sets of industrial party lights that were not light in weight. I double stranded the the cable wire and hung the lights off the double strand wire with outdoor sun resistant cable ties. I added cable tensioner too
Yes. You can buy any length you need.
This is not strong enough to pull down a tree rooted in the ground
3/32 wire and 1/8 with the coating