what they mean is if you are gonna coast, pull the tranny into neutral and then coast, dont just step on the clutch, doing so will cause the clutch to get over spun and fail.
Negative!!! Never ever put it in neutral downhill and rely on the brakes, just don't coast give it some gas you can't go fast anyways even if you floored it. Also even though you've already installed them never put the 4.7 ahead of the 2.28 always put the 4.7 at the back or you will break or twist the 2.28's shaft.