To the original question, replace the pilot bearing too (it's in the back of the crank) and have the flywheel turned. Otherwise you may get the ticking noise and chatter upon clutch engagement while driving. The later question of ticking noise; it is usually a bent finger in the clutch. When the pilot bearing goes, it sounds much like a loose rod or wrist-pin (more of a clunk-clunk) and is very disturbing too. The fork and ball are very cheap compared to the labor and other parts, so why not? Don't know the layout of the slave cylinder. On most cars it's outside the clutch housing and would offer no savings to do at the same time. But, the slave cylinder could cause clutch failure due to poor disengagement so it would be good insurance to replace it too.