I'm not a big fan of the 3-4, but I understand why you're using it, especially if you're playing with UGA. That said, my base defensive playbook is 4-3 but I still run a fair amount of 3-man fronts when I need to. I'm a big fan of the nickel package and run most of my blitzes out of it. The overload blitz, thunder smoke, and when I'm feeling like a gambler, the double safety blitz. I also like running the nickel against no huddle teams because there's so much flexibility with the nickel and I can run plenty of blitzes, cover 2, or man coverage out of it without changing the formation.