Hopefully others will tune in, but I notice you are looking to climb SRS. I climb moving rope, and the only way I'd use that on a straight spar(no crotches) would be if it was long enough to go around twice, but then it isn't reliably ground retrievable, and can't be set from the ground either.
For static line you have different options obviously, if you describe the situation someone probably will recommend a set up. You may not need that gear at all.