I am looking to get a Mondince FM316 in XS, I was told the molds are not ready for another 40 days. I currently ride a 52CM Santa Cruz Stigmata and a 51CM Cervelo S5 and I am 5'6" tall. The sales person I have been in contact with keeps trying to push me towards a size small but everything thing in the geo chart compared to my current bikes is telling me to wait for the XS. Any insight from current owners?

Thank you!