If you’re going to go this route, why not just run the cable down from the mast tang (i.e. attach a trap wire to the front of the wing). Doing so would provide reinforcement that is much better aligned with the applied load (gravity => down).
That is my understanding as well, the two are more or less synonymous. If you want less rust, use 316.
Edited by Dogboy on Aug 14, 2019 - 07:20 PM.