Depending on who you use for payment services you may be able to leverage their solution. For example Stripe has a good majority of the features you need includ

Depending on who you use for payment services you may be able to leverage their solution. For example Stripe has a good majority of the features you need including subscription tracking etc. you can have every customer with a unique id that ties back to your system and stores more detailed custom attributes. We kinda do this, in that we let stripe manage the subscriptions etc, we just store all the relevant data back in our database. So if we ever had to switch payment providers we can without losing any data or historical accuracy. But it did really make getting running pretty fast and easy.