Well for anyone that is curious or in a similar spot, I ended up going with the 54cm Roubaix. It's been a wicked bike (first carbon for me) so far and I think the fit is pretty good. I did put a 120mm stem on it and another spacer but it's been so good to me that I did a 200k brevet on it without any of the pain that I was getting on my larger Miyata 1000. The stock seatpost worked fine but I need to buy some carbon paste since it slips a tiny bit. Might swap out the wheels for the open pros that are on the miyata since the aksiums are almost the same weight. I'm going to try a different saddle; the one on the Specialized doesn't seem wide enough.

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