My advice is to take a small section of Greyhawk like Homlet and the area around it and really flush it out. You don't need to convert all the gods. Just convert one or two of them as most people in that area only worship those.
Have the party start out just villagers and run them through a funnel. You will really have to do very little actual conversion just be aware there are some major differences. DCCRPG just is a much grittier darker (in general) rule system.
As the party starts to level up (eventually they will start living and leveling, eventually) you can keep adding to your notes and melding the flavor of Greyhawk with DCCRPG.
Remember in Homlet, The Adventurers don't go to the Dungeon! The Dungeons come to them!
Solid advice. I wouldn't want to undertake a project like converting all of World of Greyhawk
at one time. Focus on a few key elements and convert a little at a time. What you don't want is to spend a bunch of time working on things that the players never encounter or you never need to use.
As far as patrons go, all you need are (1) those followed by PC's, and (2) those followed by the bad guys. Other patrons may trickle into the campaign as the game sessions continue.
Another thought is that you might start your conversions by looking at the folio version of Greyhawk. It doesn't have as much material and I think that a lot of what's there isn't statted out for any system. It might be easier to work from a general outline and build from scratch than it would be to take a newer product and have to actually convert everything. Just thinking out loud.
_________________Marv / FinarvynDCC Minister of Propaganda
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DCC RPG playtester 2011, C&C
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Since 1993, OD&D
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"The worthy GM never purposely kills players' PCs, He presents opportunities for the rash and unthinking players to do that all on their own."
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