" I am replacing the clutch and disc. "
I wouldn't do that.
Have them rebuilt. You never know what you are getting these days when you buy new parts.
You've got plenty of good advice here on pulling the pilot bearing; I've got nothing to add.
Label the 6 clutch bolts; they are special & other bolts will not work.
Yes, replace the throw-out bearing. And, replace the front transmission seal too. Unless you have a clutch alignment tool, you will need to remove the main shaft anyway to use that as the alignment tool.
In addition to surfacing the flywheel, make sure the ring gear is ok.