I was taking a look at your characters' backgrounds today to get a little refresher on the PC's. As you all know, we're switching this to my homebrew setting (as yet unnamed), and any inspiration I get is worth gold to me.
I'm going to attach the regional map to this post. Although I'm still adding small details, it's mostly finished. This is the same map that renau1g and I were talking about. There is a city called Ironfell (just left of the big shield) that's as good a place as any to transplant this adventure. So Irongate will now be Ironfell, and all that entails.
Please review your characters' backgrounds and make any modifications that are necessary to make them less Greyhawk-ish and more Romedan (Romeda is the name of the region, but not the world, pronounced "row-MEE-da").
Bu'urt's will require the most change, as his is the most Greyhawk specific. None of the other locations really have a history yet, so you're free to pick from them to help you. I'm also not averse to adding more towns or features to match your backgrounds; just tell me where you need it.
As far as religion goes, just use the default d&d pantheon.
-IG