BigDevil:Hey Thanks Class Monitor!Edgefield is a more established school, so the demand is there. From http://www.kiasuparents.com/kiasu/content/punggol, their 2C TUR had been increasing over the years. So it will likely see balloting this year, but possibly for those living outside 2km. Unfortunately the history does not show the result from last year's registration, else we will have a clearer picture.
Horizon, on the other hand, only started operation in 2010. So demand in the earlier phases 1 - 2B is low. So you are pretty certain of getting a place in phase 2C.
It looks like you won't have to consider any other schools other than these 2. And both of them operate at single session (ie. morning).
Can't help you on after school care though. Perhaps you might want to check out the respective school's parents networking thread to see if there's any info there?

Yes, I have called up to check on the schools. Both operates in the morning session and both schools have ASC within the school compound.
So its great news for me!
However, from the conversation I had, I feel that Horizon may not be fully ready yet... Just my personal opinion...