In this case, it would be a subscription where the customer could choose when it starts. As far as I know subscription apps require the first order to occur immediately, then do recurring charges/fulfillment. In this case, I'd like the customer to be...

I am interested in offering a "sign up and we will charge you/send your order in X months" option for our customers. Is there an app that enables this? The idea is that after a customer pays for and receives their first order from us, we'd like them ...