I've just completed building a hard top over my cockpit and used galvanized steel pipe for the stanchions and handrails. I plan on doing some half hitching and cockscombing and am seeking guidance on what cordage to select. She's an old fishing boat and definitely not "yacht finish;" I love her honest work boat look and can envision painting the fancywork the way you see on old naval ships, ferries, etc.

For sizing purposes, the stanchions are 1" pipe while the handrails are 3/4". Thanks in advance!