Woo Subscriptions

I need Subscriptions to limit the amount of downloads a subscriber has each month. I.e. if they pay $45/mo they only get 30 downloadable photos each month. They also need to be carried over to the following month if they do not use the allotted downloads. Also each subscriber needs to have the option to see how many downloads they have left in each product page. At the subscriber account, they also need to view what they have previously purchased for redownload.