I'm shorter than you, but am visualizing you as about my thin-ness (no ****). 5'5", 120 lbs, 28" waist. I love my Hincapie HC12 bibs. They're on ebay all the time and go for around 50 dollars. Many smalls are a little too big for me (PI especially), but these Hincapie's fit perfectly and the chamois is amazing. Give them a shot?