I really, really like Kingmaker. It's my favorite adventure path. I would like to run it, but incorporating it into my Monster Hill campaign. I do have some concerns. One, incorporating it into my campaign world. Two, I'd like to have it be a bit higher level, so that characters that have been adventuring in my Monster Hill dungeon can transition into Kingmaker.
Incorporating it into my campaign world is actually pretty easy, because I'm going with a bottom-up approach. I'm pretty much just detailing the dungeon and the village the players are operating out of right now. I have a general idea of what exists beyond. The kingdom (the term is used lightly, since it's mostly just a collection of independent baronies, duchies and so forth united by a common heritage and purely theoretical in most cases loyalty to the "king in name only") based to a degree on Medieval Germany.
I'd like to set it up so that the characters would start Rivers Run Red at 9th level, "Name Level" in Old School parlance. So that would suggest that Stolen Lands would start at 6th level, I believe. Some parts of the conversion won't be that hard, just swap lower level monsters for higher level ones. The named NPCs are going to be the hard part.
Since my Monster Hill campaign will have multiple groups, I'm considering allowing multiple PCs to found baronies in the Stolen Lands, possibly some of them taking the place of Varnhold, et al. However, that'd take a whole lot more reworking.
For the first encounter in "Stolen Lands" I'm thinking of having Happs be a modified Monster Hunter from the Game Mastery Guide NPC Gallery and the bandits being modified Turnkeys, either four or five, or perhaps more lower level bandits, since I'm not sure that these bandits would need to be the highest level a single-classed warrior can be in my campaign.
...what's Monster Hill?
The name of my campaign and the dungeon on which it is focused.