I'm assuming that without the TT faculty experience, a deanship will be hard to come by. But I don't think it's out of the realm of possibility to direct an interdisciplinary center or work in grants administration. Surprisingly, I really like chasing money...doesn't that automatically qualify me as an admin? (That's a joke.)
Baby, if you're good at chasing, and catching, money, you will be employed into perpetuity! You could be an excellent mentor for faculty who need coaching on grant-writing (say, oh, I don't know, humanities types!) and there is definitely a place for knowledgeable and enthusiastic grants administrators outside of the sciences. I think your future is very bright.
