By listening to everlasting song album, you will recognize most of Kajiura composition after that, because for me, that album is something like... her signature. Those 3 songs you mentioned are my favorite too
I also don't like Yuuka voice that much, only in Akatsuki no Kuruma, her voice is tolerable, at least for me. But, she's currently Kajiura favorite soloist.
Since moonfesta is for children show, so... no wonder
I hope you like 'fate to zero' the first soundtrack on Fate/Zero OST Vol. 2, I'm addicted to it.