I'm 5'2" and I have a Gunnar Sport custom and a 44cm 2007 Specialized Ruby.

The Gunnar was not a custom for me so I can't comment on their custom process. I got it on ebay and it fits me pretty well. It's got about a 51cm eTT length. It has 700c wheels. Stock Gunnar Sport frames in that size range have 650c wheels. It's quite a nice riding bike.

The Ruby is a bit shorter, 49.something eTT.

I have a 42cm LHT also. I used to ride a 42cm Pacer. Even though they have different wheel sizes they are both about the same eTT and standover. So if one fits you the other will too. The Pacer is not a light fast road bike but it's comfortable and bombproof.

A friend of mine is shorter than I am and she rides a tiny Lemond Big Sky road bike. It's an aluminum frame with carbon fork, 700c wheels. I'm not sure of the measurements of this bike but it seems to fit her pretty well. She had a Retul fit done last year and her fit checked out ok. She could probably benefit from a custom frame but she keeps riding the Lemond. She has done Ride The Rockies several times with it.