I didn't see it mentioned, if you alreaday mentioned it I apologize, but exactly where is the height of your bars in comparison to the saddle on your Specialized Roubaix?
Proper saddle location fore/aft, height, tilt is the starting point, but have you found a comfortable location for your bars on your current bike?
You might want to find that sweet spot, either by steeper upright stem or steerer extender so you know where the bars on the new bike need to be. I'm not advocating it as a solution, but more upright is different for each person. Until you find that comfort location everything is just a guess.
John