We're planning on buying one second hand as it's discontinued but I'm confused about the newborn packs (the one we'd be buying only comes as a pushchair, no newborn stuff included). Does anyone know if you need to buy a separate base and/or adapters for either the carrycot or the cocoon? Or do they just fit on to the regular base? And does the rain cover work for either of the newborn packs or would you need a separate rain cover? Thanks!