It should be a pretty easy conversion, I recently converted a hybrid to a road bike and did the following:

Replaced high rise stem with short rise two-bolt quill stem
replaced flat bars with origin 8 gary bars.
shimano 2x7 sora STIs from the parts bin
cross stop levers for braking from the flats
replaced v brakes with cantis
Compact crank and road front derailleur -mtb front derailleurs have a different pull than road derailleurs and are are not compatible with STIs

My goal was to build the ultimate baby carrier that I could use as a viable, comfortable road bike with which i could get some speed.
If all you're doing is making a bike more suitable for road use than it would be as simple as Adding drops, levers, and less aggressive tires.