And second, somebody please tell me we'll survive this.

We are family of four, currently living in East Europe (our home country, so small I'm sure nobody ever heard of it). We spent last 10 years waiting for a green card in the USA, got tired of paying the fees and being dragged through the mud, so here we are. I never worked (never got the green card) and my husband can't find a job that could support all of us (living on my mom's retirement money is not very cool).
Anyway, my husband applied for a local job in SG and his visa got approved this morning (for one year only, is this the norm? I don't know if the company asked for one year or the government didn't like his resume?). He has 3 weeks to move, not much time to do enough research on all the things we would like to know.
My biggest concern are my kids, or at least my 7 year old son who is in 2nd grade. I don't know what to do. He can't go to private school, that's for sure, and it looks like it's super hard to get non Asian international students into local schools. I feel like crying from the stress. I know there is a test for International students taking place on October 12, but I'm not sure we'll have the address/condo by that time and we would have to pay close to SGD$700 by Sept 13th for it.
And another thing is finding a condo. Our budget is very small and we can't afford to live close to the city center (and it looks like center has expended to half the island). I would like to find a nicer HDB but I'm afraid we'll not have time to search for it (we have 2 weeks to find us a place). So at the beginning we have decided to take a smaller condo.
My husband job will be at the Ruffles place so he'll have to commute. I was looking at the Bukit Panjang and Choa Chu Kang on one side and Tampines and Pasir Ris on the other side (liked the And Mo Kio but it's pricey). Can anyone tell me anything about this districts? I'm not afraid of living with locals, since we decided to move into SG we would like to think of it as our new home and one can't hate it's neighbors. If I have survived living on the 89 street/1st ave on Manhattan I can do anything.
I have to unpack all the boxes we shipped out of the USA, decide what to take and then pack again. I won't have much time to do any research before moving. Should I take any long sleeves? Do I need any bedding or is a bed sheet enough? Is there a list of available schools? I would like to know where I could place my son before deciding on a district. Like, we sign up for a condo in Bukit Panjang and only available school is in Bedok (KWIM?).