Don't plan for two kids in bus during peak hour..
I also got two kids now 8 & 5 already.. the first one stay at mil place cause the childcare just downstairs.. most of the days 3 of us will just sleep over at her place while waiting for bto also.. so totally don't need car except occasionally taxi to go back and forth on weekends when we sleep over at my mum place..
After 2nd born.. wife also work PT instead of FT to take care of the kids.. when we shift over to new bto applied for nearby school walk 5 mins nia.. childcare for 2nd also from moe kindergarten since boy studying in same school got priority..