Most of the stuff I've read regarding converting to a hydraulic clutch is a huge pain in the ass.
Seems even the guys that have successfully done it still have issues with it a couple years later. I don't have any direct experience, but I have researched this topic before.
What are your reasons for converting and why do you want to change the transmission? What goals do you have?
The cons of going hydraulic would be cost and extra work involved. The same performance can be achieved with a properly set up cable system and aftermarket quadrant.