Both Valid H4 and H1B visa travelling this week?

[ashbeav]

can any one please help me, My wife is travelling this coming monday and we both don't know what should we do.

this thing is my wife's has an valid H1b from her employer adn recently since we have a child we decided to go for an H4 ( on my H1B am in USA currently).

Now there employer confirm her a project in USA so what can we do now?

1) Is it possible she can travel on H1B adn my child on H4 visa?

2) It is possible which will be best for me is she come on H4 Visa and apply for COS so that it will take atleast a month for her to start an job?

3) how much time the COS will take she has an startdate for august end?

I will be really thankfull ..if any one can help us in this situation.