Just finished rebuilding my Bianchi into a drop bar.
Here's the before:

3x6 speed with twist shifters
I rotated the riser bar forward and added bar ends to give a more aero rising position. Had wider hybrid rims and 32mm urban touring tires.
Here's the after:





Don't comment on the bar tape. It's the only one I have in my bin. It'll be changed to white as soon as I order a set.
Double 8 speed, sort of a mish mash of parts: Ultegra compact crankset, Sora 8x3 shifters, seems to work fine on a double, 105 RD and Sora FD, Alexrims on the same 32mm tires.
I'm in the process of procuring a set of matching emerald green fenders; rack will also be installed.
Had some difficulty with the shifter adjustment, but all good now.
I might upgrade the stock cantilever brakes at some point. I waited just in case I didn't like the ride. Haven't ridden it save for a brief test ride after the rebuild, but it feels pretty good. Riding position feels the same as my vintage Gardin racing bike.