I have always loved QF but I agree with you and I'm 5'8"!!
The optimum length for me is 27" but I'll take 28" or so if it's all cotton (shrinkage goes up). One or two tunic tops is plenty for me to own and even though I have a 30 - 31" leg, tunic tops make me look shorter and I feel dumpy. I want a proportional look and I'm positive that Petites do too!
*~"Never eat more than you can lift......" Miss Piggy~*