To get an optimal fit most need a smaller size Tri bike. Head over to Slowtwitch and read all about FIST fitting to learn the differences in fit, but the short answer is you need a smaller top tube becuase you are sitting much more forward and you need a shorter head tube becuase you are a lot more leaned over and there needs to be room for armrests.
60cm CAAD8, 58cm Dual
I'm 6'2" and have a 34" bike inseam
You kind of have the process backwards, you need to get fit, then buy your bike according to the fit, not buy a bike and then get it to fit. Even if its a smokin deal, if you are compromised getting it to fit, then it won't be a good deal.