Is my landlord screwing my fellow roomates and me?

Two of my friends and I are getting ready to move into a house we are renting on sept 1st. However the current renters are not moving out of this house until sept 1st. I feel like we are getting screwed because I thought that by law the landlord had to go in and clean up/paint the rooms in the house by law before new renters could move in, but this will not be able to be done if we are moving in the same day that they are moving out. Plus one of my roomates needs to be out of his place by the 1st and into our new place by then. We also have a storage unit which will charge us for a whole months rent if we have our furniture in there for a day past august 31st. What is going on!?!?! Please help! Thanks!