Why not add your wife now otherwise it will cost you double to sponsor her later and you may be seperated from her and your son for up to a year.
You are right if i add my wife and child and pay the extra fee so they both will have an obligation to validate their visa as well or not because my child is too young and i do nt want my wife and child to travel to Australia right now but in the same time i want to get rid of applying separate VISA for them ?Why not add your wife now otherwise it will cost you double to sponsor her later and you may be seperated from her and your son for up to a year.
Only item that is outstanding is MedicalAnd you have not done medicals or PCC yet?