Hello. I don't know if my questions can be answered or not. I'm nube. I want to know about my size. I will post my measurements below. I am looking for a road bike which I will also use for triathlon. I will hopefully get some arobar attachments and try to set up the bike for triathlon position, however I will also use it to commute through mountain highway to work which is about 30-40km. I am in Taiwan, and although a large size bike has been recommended here, I was hoping to find out that I am close to the gap, and could adjust a medium size frame to fit me. Is that possible? It's just that there are so many great used bikes here... most are size S or M. Thanks in Advance.

height = 181cm
inseam =86cm
arm length = 65cm
ground to torso = 150cm