Wet clutches are heavier and don’t let the engines rev as easily. Just changing the clutch will increase your engine rpm which is an increase in mph.
The new style pipe doesn’t need slipped above 8600. Even 8400 would be enough and every little bit less you have it you will keep the heat down and last a lot longer. A 3 disc is unenecessary unless you are excessively heavy but their is no harm using one. The tomar is also great