DO NOT try to run FOOK and FWE together. It will not happen. It is a good possibility that you could damage the main game files. FOOK and FWE to not work together. Choose one or the other. Than try to get your game running as smooth as possible. I'm sorry, but I do not have any knowledge, at this time, to give you advice on building a mod. If you want a second opinion on the ability to use FOOK and FWE together, check through the troubleshooting posts here and at the Bethsoft Fallout3 forums.