5'0" here - As with many smaller racers, I have and love my Ruby Pro.

I also have a Ti bike with 650's though I find the Ruby with 700's fits me a bit better. I guess I just have a bit of a rule breaking body.... Long legs (28 1/2 - 29ish inseam) short torso, short arms.

My TT bike also has 650's and there I could never get away with bigger wheels - I already can't get very low....