Dear ,
I am also in the same situation.
As per my PRO ,
Doc required will be
6 month bank statement
ur passport photocopy
Wife passport photocopy
child passport photocopy
birth certificate photocopy
ur ID
Wife ID.

but still i am doubtful for this document.
I will apply in this week,i will let u know the update.

if u have more information please share with me.

77062500.