I have one I made out of amsteel that is 89" long.....yes, I screwed it up , that I will give you if you want to try it out just to see how it works for you. No whoopie slings needed to attach the ridgeline to the hammock.]Including the gathered end, my hammock is 9.5'. So I'll make the ridgeline 95". I'm not using my Texsolv cord, it's too expensive, so I'll order something. It sounds like the ridgeline is attached to the hammock via whoopie slings (?).
Next up...whoopie slings!
In life there are no limitations. Except stupidity. If you're stupid, you're screwed.