Ultegra 10 triple is the answer. Why wait for DA triple (you need 180mm crank arms?) Ultegra 10 is the sweetest triple made. 52/39/30 gearing has obvious advantages (much better than 52/42/30) . A nice thing about a 39T middle ring is you could easily swap in a 28T granny and not have a big jump to it....then you could use a tight road cassette like 12-25 and get 18 progressions from 30 gear inches to 114 gear inches.

Compact is not that best idea if you want lower gearing, but a triple is.

I have a Compact, but I use it with a 11-23. To me using a 12-27 makes it weaker than a double and not as good as triple. Compact with 12-27 is just a bad comprimse.

BTW, Compact with 11-23 is superior to regular double and 12-27 in my opinion. Compact with 11-21 is superior to regular double and 12-25. It is a great double, but starts showing it's weaknesses if you put a bigger cassette on it.