I'm 1" taller and 2 lbs heavier than you and personally I think the large hobo is too big for me. It just depends on if you like the way large bags look on you - it's all personal preference - no right or wrong. I have both bags, although my ergo is a medium. I love both! Sorry I'm no help!Do you think the large (ergo) will be too big for me? (look huge I mean) i'm 5'3", 110 lbs, skinny arms...