Getting the vocals to sit right in the mix

Video: https://www.youtube.com/watch?v=ZQkSpigCSco

Greetings all, I've been trying to figure out how to handle the vocals in the first vocal part (past the eurobeat part) and the final vocal part (near the end of the song). Seems that if I turn them up they overpower the mix but are clear, but if I turn them back down (as I've done here) they take up the spectrum just fine without being clear enough. Thoughts?