What should I do to prepare myself for an information security career?

At the moment I finished a bachelor degree on Information Technology summa cum laude. Doing 2 masters degree (one in information security, another in project management). Certified in A+, Network+, Server+ and Security+ working on MCSA and MCSE.

If I wish to study a doctorate on cryptology or information security, what should be the next steps? I understand about the CISSP, but still need some more information to get ready.

I hope you expect knowledgeable couselors to be tuned-in here.