I am definitely looking forward to seeing more episodes of Steven Universe. I don't have a favorite episode of the show, but I do enjoy the show a lot. I don't have a favorite character either, but the characters in the show are great imo.
There are a lot of songs I like too. Those 5 songs you listed are good too. There was one track I really liked in there that I listened to a lot sometime ago. It was Decisive Path: https://soundcloud.com/aivisura/steven-universe-decisive-path
The fusion characters are awesome too.