Bar lines in polyphonic music and words under split voices

[Do something Artistic]

I have been working on a piece of music for some time now and cannot seem to get the following to happen.
 
1. vocal parts with different measure lengths. Lilypond always seems to want to line bars up especially when one bar now has six beats from four or changes.
2. attach words to a split vocal line of the form << {}\\ {}>> lilypond seems to want to just skip over it and go to the next "normal" part.
 
Spencer