Hos, I always have major reservations about projecting a CB to Safety. Safety is an instinctive position whereas CB is an athletic position. Just because a CB seems to have skills to play Safety (namely good tackler) doesn't mean that it will work out.
Thus this guy is a project with athleticism and shouldn't be touched before the fourth round, IMO.
If he is good enough to play and start at CB in the NFL then you can consider the guy in the second, IMO again.