Road Bike frame size !Help!

I want to buy a road bike and am not exactly sure what size I should get. Any input would be appreciated. The bike I’m looking at is the Scattante CFR Limited Edition from Supergo http://www.supergo.com/profile.cfm?LPROD_ID=24733&lsubcat_id=7618&lcat_id=7604&referpage= It seems like the best value for the money I can afford at the moment.

My height is 181cm, the inseam 82cm, and the sternum notch 143cm. I’m very flexible, and might want to do some road races on it next year.

http://www.supergo.com/sizecharts/CFRgeometry.jpg

What do you guys think? Should I get the 56?

thanks,

daniel

58cm should be fine.