Manual Transmission - should i install my twin disk or not?

getting a mcleod racing twindisk setup here in a day or two....also bought a new gm slaveas well........i tried installing a clutch once, and dont let me get into it.....i feel like i can do it, but not sure if installing a twin disk is any different than a single disk.....how much harder is the twin to install then a single? do i really need to replace the pilot bearing as well? what could happen if i dont? also, since im installing a new gm slave, do i need to rebleed any hydraulics?

It's the same as a single. http://www.streetlegaltv.com/tech-stories/drivetrain/tech-install-mcleod-racings-rxt-twin-disk-street-clutch/
You should replace the pilot bearing using a blind hole bearing puller and yes, you need to bleed it..