how to choose b/w NEW SONG and ABACUS kinder if u were me thks!

hi, my boy was just offered a seat fm abacus kinder but afternoon class(we prefer in the morning, and school fee is $4800), and NEW SONG kinder accepted him as well, but not sure am or pm class, we will be inform in June, and its fee $2xxx, but it's mixed age teaching method.
If u were me, which one u will choose? more and less, I think they 're likely the same, but what I concern is which kinder can make my boy talk more(his lang. ability behind his peers), and I want to send him to CWB school(even abacus kinder kids hv prority get interview but it doens't mean they will be offered a seat), anyway, if CWB school not accept him, RC is our 2nd choice..
btw, my boy is mixed kid(french and chinese), and our eng. is not native..so....we hv no idea which one is suit for my boy.
Pls advice!
THKS!