BLUF: Should I stay in my line manager position of a growing department, or should I make a pitch for a VP position at my current company that I have have a chance to win?

Background: I'm currently head of a software development department with 15 directs and 10 contractors, in a company with ~ 100 employees. I see a chance that I could instead pitch for a VP position at the same company and get it. Regarding the formal level in the organization and salary, it would be a step up. But I would have no staff, and the VP position would be a custom setup that would have to be explained to potential future employers. I have been a "real" manager for only a bit more than a year now. Should I do it? Would that be an advisable career move?