Thanks - in that case, I think you can apply in August next year, including minor child(ren) in your application.
And your wife can apply immediately you have your own certificate in your hand, because she will then be the spouse of a British citizen, and eligible to apply after three years UK residence, without having to wait the normal five years.
Alternatively, you could all wait until your wife can meet the five year requirement, and apply together. This would delay you and the children, but would save a couple of hundred pounds...
paul