I prefer to automatically have my CC charged monthly from CW. If the CC is declined, I'd like to have the ability to 1) notify me ideally via text and email that my card was declined and 2) have CW pull from the Backup Funds account. That way, CW is still paid on time and there's no interruption to the servers, sites, and services that I have with CW.
Someone else mentioned a secondary CC and that would be a great additional option too.