A final CD-Master is simply an Audio-CD. Not a data-CD.
Burn it as an "Audio-CD"
No pause between tracks.
If you want 2 seconds pause after a song, the song before must go 2 seconds longer with silence.
Simply cut the end of the song 2 seconds later.
Then you can send them to any company that makes cd-prodoction.
It does not matter how the songs are named, because the audio-cd knows no filenames.