a little heavier, I use 6 carabiners in my hammock/tarp/arl/straps. I use a carabiner on each side of my whoopies (4 carabiners) and the other 2 on my hammock. think this:
this way I can set my tarp up first if need be, it just clips into the carabiner (gate up).
I would advise against prussiks unless you have diffrent diameter ropes. A prussick made of the same diameter cord thats strong enough to support you will tent to slip. this is due to the bend radius being very close to the rope diameter. Either splice yourself some whoopies or order some. I switched and wont go back, I dont think you will either. and the weight you gain in carabiners is offset by the drop when switching to amsteel.