I'm looking for a way to offer two base monthly recurring options, with a series of add-ons as purchasable service products on my wordpress site and set them up as a recurring monthly bill, or a one off service in some cases. Is there anything out there that would enable me to do this with just one page as opposed to having a bunch of individual product pages that you have to add to your cart? Or even an invoicing system that enables me to put together their monthly package in a system profile and then autobills them every month through Stripe. Any advice would be greatly appreciated. Thanks guys.