170 feet, actually. spectral hand is a medium range spell. and you only have to come that close in the last round, when your using shivering touch.
as for arrows, wind wall is a 3rd level spell, and completely shuts down archery. scrying is a 4th level spell, so you can know where the fighter sleeps, and catch him off guard. if you want to make sure he fails the save, write on a piece of paper that it belongs to him, and use it as the possession of his for the spell, to give him a -4 to the will save.