Separate Invitations in Admin - Paid and Unpaid

My invitation list is getting out of control. I'd like to be able to group them into two categories to find them easier.

In the invitation page, there should be a landing page, that has two categories, Paid and Unpaid Invitations.

Invitations should then filter into those categories based on whether they are paid or not.

Then we can easily click into each category for our invitations without having to scroll down a huge list that is chronological.

Would also be great if these lists were alphabetical as well instead of chronological.

I have over 50 invitations, and my community is small. I can't imagine what you all do with larger communities and managing invitations. Suggestions welcome!