I'm sure you'll not break anything. With a new level in rank, you do have a bit more responsibility but I'm sure with some effort you can handle it. Anything worth doing requires a bit of effort. And all the praise you get, it's all very well deserved. Heck, you've been doing things long before I got here even, from what I read. All that has gotten you some serious recognition, which has been seen by the Admins. With your new position, you can do even more to help this community, within reason of course.
In anycase, do have fun as a Admin and don't push yourself too hard.