No nests needed until laying time, correct. Good not to get them in that habit of sleeping in them. Mine just started laying last week...I put an old covered litterbox full of shavings in their pen when I saw their combs start reddening and some of the pullets started squatting for me. Those that are laying have found it acceptable.
Feed, water, roosts cover the basics. You'll need to decide what you'd like to use as bedding over the linoleum. Cover any openings with 1/2" hardware cloth to prevent predators from gaining entry. Make sure the door has a raccoon-proof latch.
If you're free-ranging, then having a night-light inside the coop (at least temporarily) may make it easier to get them in it at dusk until they have the routine down.
My smaller free-rangers like to huddle together in a large dog house in their pen for comfort/warmth. The bigger ones prefer the roosts. A cardboard box would probably work just fine for a huddle box if you'd like to provide one (probably a good idea if it gets chilly at night).