It's been years, so went back through my notes. I wanted to link in backgrounds to the history of Diamond Lake, so that's all from the adventures.
I linked in some other adventures (the mud sorcerer's tombs are from the original Dungeon Magazine, #37 (AD&D) and #138 (3rd edition remake), so the sigils in one background only have meaning if running those, but they fit the lore of the area perfectly, and I ran Tomb of Horrors...just because) .
The dreams could be ditched, I'm not sure I ended up ever using them and I think they foreshadow Alastor and obviously the worms. I tried to otherwise keep it simple. Kristophan = Free City and you just revert to the original pantheon. I'm attaching my original Notes and Character Creation Guide (all from a prior edition and different geography, but you might find some useful nuggets!) Ultimately, as we got past the lower/mid level adventures, less and less adjustments were needed.
Sadly, we got near the end, but ended up splitting our group, which had swelled to 6 players, in half. Half wanted to switch to 5E (not wanting to divert this thread to an editions war, but that was the cause). I may revisit this one....someday. Had a blast for quite awhile.