Regarding the "perlon at the base" issue,
1) pack rats and snafflehounds eat this stuff, remember
2) if you're there in the spring or summer you can always pick it up and carry it out
3) better perlon at the base than conduit
4) evaluate the abalakov slings just like you'd evaluate slings around a possibly loose block high on an alpine route. If they look good to you go for it. If they scare you add a new one or two. Webbing is cheap. Dead people can't spend the money they saved on webbing.