privacy – How to maximize anonymity in a monero payment to a VPN service?

So first, I know that VPN isnt exactly useful for anonymity.
Did my homework about TOR and Tails.

However, I still want to use VPN, NordVPN to be precise.
I want to avoid causing a paper trail through paypal payment, and they accept monero.

The monero protocol itself seems to be pretty good.
However, I also learnt that my privacy is just as hard as the weakest part of it.
So I guess using monero on the one hand, while on the other hand associating my VPN account to my regular mailadress and not using TOR or the like to establish the VPN account wont help my privacy/anonymity much ^^

So, how can I maximize anonymity in this use-case?
What should I do? Use tails for establishing the VPN account + trashmail?
What else?