I am not sure of the weight of different ridgeline material. But I have to agree on having a load bearing ridgeline. The weight difference for going from the lighter rope to something that will hoad the weight can't be more than an oz. 40' of the straps that Ed Speer sells only weighs in around 8 oz.
Is that too much to ask? Girls with frikkin' lasers on their heads?
The hanger formly known as "hammock engineer".