Nice work. My preferences are with 1 and 3 and those for different scenarios (see below). IMO 2 looses optically against 3. 4 and 5 IMO clutter the music.
I would use 3 in situations, where the singer essentially know the language. I regularly use something similar to 1 when singing in a language I have no understanding whatsoever, aka when I'm just singing arbitrary sounds (from my perspective). In those situations I find it helpful to have it everywhere and don't care about repetitions. Whatever helps during performance is good. In situations where I would prefer 1 I sometimes create my own version of the music with my personal understanding of the pronunciation replacing the original lyrics or put the original lyrics in italics as a 2. stanza below. I find that extremely helpful during performance. As always others will have other ideas. Kind regards, Michael
