My husband and I are beginning to set up our baby registry, and I'm a little confused about what we will actually need, this is our first baby if that matters. Do we really need a pack and play, a swing, a crib, and a bassinet? Some of these products say you can only use them until baby is 10-15 pounds, it just doesn't seem worth it? This may be a stupid question, but I don't want to purchase a bunch of items if they aren't necessary😓 any advise is appreciated!!