For what it's worth, I recently played about with both Faldorn versions installed and it was... fine? Your Faldorn requires siding against Trademeet, whereas Lava's requires killing Faldorn to save Trademeet, and her being resurrected later. So they don't meet or overlap. Unless I didn't play deep enough into their respective content.
So I used Truman's download (and a machine translation), and didn't read the post properly and went ahead and installed all the quests. However, I got a CTD when entering Government District. It appears from the tp2 that AR1000 is used for one of the other quests, not Request of a Lady. The CTD no longer happens if I delete AR1000.are from override, but that is presumably going to bork my mod quest. When I tried looking at AR1000.are with NearInfinity, it told me it was null, which I'm not used to seeing.