Provide you a Woocommerce Preorder plugin extension

Plugin allows your users to buy preorder products with normal product in a single checkout. Currently, the pre-order plugin allows for only one pre-order product to be added to the cart. If there are existing products in the cart, the pre-order plugin wipes the cart clean. It would be great to be able to order other products while pre-ordering another product. So you can use this plugin for that.