You will better off with something that spreads the weight evenly. I don't like ring slings at all as it puts the weight all one side.
HAB & Mei tie's are perfect at spreading the weight across your back for more longer wear.

Oh by the way, when I made my HAB wrap, I used 2.5 meters & halfed it & I used a really strong seam & have never had an issue with it splitting, it had a name but I can't think of it now... it will come to me at some point down the track LOL