I've appreciated your comments about a climbing system.
here: Mast climbing
The next item is the actual line. I'm planning on getting 350' of line.
My first thought was 7/16 to 1/2 sta-set which is readily available and is rated up to 9,000 lbs.
NEW ENGLAND ROPES White Sta-Set Polyester Yacht Braid at West Marine
Then I saw this. Less than half the price, specially formulated for climbing.
Also I figure 12 braid will stuff in a bag with less chance of hockles.
Arbor-Plex 1/2” Rope
The line rating is 9,000 vs. 6,000 but I'm only 200 lb and I'm using a 4 to 1 purchase so the line will be loaded something above 50 lbs.