Whampoa William vs Canaan PN

My child is a 細B.and will start PN in Jan 2018.
Canaan offered us PM class and we took it and paid all the necessary fees. But we prefer AM because my child gets up early and will be tired by the time it's afternoon. Already tried changing the class to AM but unfortunately they do not have places now.
William initially put us in waiting list and now they offered us AM class. We like the time but aren't sure whether to take it.
Please share your thoughts on this! Thanks in advance!!

* trying to decide by end of this week.. we know somebody else needs the place we let go.
* feel free to reply in 中文. i can read (emoji) but it will take me ages to type in it (emoji)
Thanks again everyone!