How to "shop" for bikes via mail order
I would suggest a serious conversation with your local bike shop(s).

Do your research, identify what you want, and ask them to do a bike fitting and order the correct size for you.

The idea is to encourage them to invest in you while you invest in them. They may want a deposit up front. But if you can convince them to get what you want, you have started a relationship, and can expect benefits such as service when you need it.

If you just buy from mail order or the internet, then when you have a problem that you cannot solve, you'll be stuck. Shops can be a little less helpful when they know the online origin of the bike.

If the first shop wont do it try the next, and play one against the other. If there's only one shop then work on your relationship with them before you "pop the question". 

BTW your weight and height are similar to mine - not unusual - but arms / legs / body sizes differ so do get a proper fitting.