From my experience working on my own large scale vocal focused project: Tear's of the Moon, it can be really difficult to organize lyricists if you don't stay on top of them. I agree with what others have been saying with pairing up vocalists with experienced musicians, but if neither of them have any clue about the lyrics then we run into problems. This is something I've been struggling with for a long time now. It would be better to, once you have some, pair the lyricist first with the musicians and then bring in the vocalists. Again this is my suggestion and I'm not the greatest example of success here, but I think it would be a good idea to keep everyone on the same page.