Hehe, I understand your feelings.

I'd say that everything being done for the finished maps and worldbuilding modules fall under a creative commons Attribution Non-Commercial Share Alike (CC BY-NC-SA) license. Meaning that if you really like your things and you want full use of them for your own stuff and to own them completely you should withdraw them and keep them for your own projects. The reason being that it would limit what you could do with your own worlds, as these portions of it would fall under that license. If however you intend your own world to also fall under that license there is no conflict and you could use it in both projects. I recommend against this however, my feeling is that you should try to have things for this project separate from things for your own just to keep things simple and to avoid frustration farther down the line.