Maybe. It depends on who backs us and how. Boney said that deciding that is literally the first thing we'd do with the job.
I imagine Belegar would be extremely chill about showing results quickly, other dwarves (Thorgrim?) would be slightly less chill ("don't do a shoddy job, but it takes as long as it takes"), the Colleges significantly less chill (thinking in shorter timeframes than dwarves), and elves a complete mystery because who fucking knows with Eonir.
I really don't understand why you believe that "the effective ruler of half a province with a deep-rooted vampire and necromancer problem" is a job that can be done with a bit of murderhoboing in between other projects.
Here's the part where Rosie mentions that we're wrangling nobility and digging through financial records.
Here's the part where she mentions there will be conspiracies to root out.
Here's the part where she mentions we need to instill religion in the conquered populace, a task which is famously easily done.
Like, don't get me wrong. This sounds awesome. But it also sounds like a ton of work, and much of it is going to be done by wielding organizational power: the state, the EIC, holy orders, and so on. Not just by Mathilde getting a Dammerlichtreitersignal every six months, clearing out a den of cultists, and heading home for an early lunch and to give Wolf tummy rubs.