Ruins of Castle Greyhawk ---> Expedition to...
So here's the deal: I have run the 2E Ruins a few times over the years, but never got to finish it with my players because of groups breaking up, etc. Well, I'm finally in a very stable group, and planned to convert it to 3.5 to run. Then I heard about Expedition, so I waited to see how it was.
Now that I have it, I really like it, but I'm not sure what to do. I really want to run a wider range of levels, essentially making it a whole campaign. I see two choices for combining the products: As was mentioned, the 2E version can be used to flush out the new one. The problem here is that I don't know if I can expand the character level range enough. The other option is to use the new product as a conversion guide for the old one, but I'll have to drop almost anything related to the new plotline.
I haven't fully read through Expedition yet (nor re-read the old one again) so I know I have a lot of work to do yet. I'm just wondering if anyone has an keen ideas about this.