In Honey & Dear, we would love to cater all your needs and these are the Pre-Orders items that can be ordered when you make a purchase with us. It will took longer time to ship, ETA 1-2 weeks or sometimes during holiday season it will took up to a month. We cannot estimate or guarantee a specific ship date but we will notify you via email or whatapp when the shipment is ready to send out. Yes you can combine in-stock and pre-ordered items, we will send out all the ready stock first and the pre-ordered one will ship by us second time. Second shipping cost will be borne by our company and you only pay once.