Just a quick update that I ended up grabbing the used ML Adv. Pro 0, and was able to adjust it to my current specs. The saddle looks high, but it's just not that bad. I have a 4.5'' saddle-to-bar drop, which is OK and not a lot more than I have on my Defy.

Overall, I'm feeling comfortable on the bike & satisfied with the purchase. The DI2 is AMAZING.