5 feet of water is not a lot so you need to set it as low as possible. Research "cone of depression". What size casing? How many GPM can the well produce? Is this a rock bore or a mud well?
A rock bore doesn't usually use any kind of screen. Whether or not a screen is required depends on the formation, whether the driller set a gravel pack, and what sort of GPM you will pull.
My 65 foot 6 inch well casing stops one foot short of bedrock and has no screen. I have had problems of mud getting sucked up into the casing and had to flush it out and set some crushed stone. I also had to carefully develop the well to open up the formation for more GPM.