Sounds like Swordfell (it's always been more of PvE because monster-noble ratio), but more of a military junta style government. It sounds awesome enough to tempt me.
It might not even need constant funding. A decent founding group with deep pockets could setup the realm to be sustainable fairly quickly. A good city, some easily defended rurals, stacks of recruitment centers, and enough nobles could probably keep a hold in the west.
