essentially we still cant do shit with the complete songs right?
Wrong. Once you complete the song (with only your material) you can copyright the MUSIC OR do a Sound Recording Copyright (FORM SR) OR you can do another PA and write in your PA Registration # indicating that the lyrics were previously copyrighted. When that happens you will need a FORM PA - not the short form.
what can we do with this half copyrightten material?
It's not half copyrighted. Your lyrics would be a full copyright of their own. This will prevent theft and prove creation date.
i think if we send in a disc it will be cool.. i dunno i may type it all up.. if i do type them do i need to trancribe the entire song verbatim? like adlibs and shit too?
You would need to transcribe verbatim adlibs and all. If you want to send a disc - that's fine. And if there is anything MELODIC that is copyrighted along with the lyrics. In that case, if it's not just rhymes, send a disc. And then your melody AND lyrics are set.