you have enough post to PM now I believe
For playgroups/ kindie for 16 months old... can't help you there as my daughter is more in end of kindergarten/primary zone.
Didn't have to look into it.
East Coast is superb from what I've seen... but on our part we decided against it in the end...
As given the school we got Little Miss admitted in.... she wouldn't have had transportation organized by the school.
Depending where you work, what you do in a day commuting can quickly become a hassle ( all in singaporean proportion indeed...
On our part we ended up on Thomson rd... this way Little Miss and hubby have each about half an hour commuting by public transportation/ school bus
p.s. 10K as accomodation budget gets you in a nice place... prices are not as infamous here as in HK