personally i think the A1 is quite ok. Moreover my dear husband can stay with me during the stay. I was thinking if baby has any complications, then might have to downgrade to B1. In any case, prior to admission, we are allow to change wards. So it does not mean that if you paid deposit of the A1, you will have to take the A1 ward.
Will need to pay around $2K in cash as deposit. Kandang Kerbau Hospital offers 6mths installment-free for UOB and I think Citibank. If you havea DBS credit card, they allow you for 12mths installment free. you might want to consider these options.
Btw if you are going to use your hubby medisave, then you and your hubby will need to bring your IC upon booking. And kindly bring along your pink-check up card too.