I am sorry but your question is confusing. I am not sure what you are asking. If your wife is going to be a joint sponsor, you need to fill out I-864A as she is a household member.
This answer is for informational purposes only and should not be construed as legal advice.
It is improper for us to give you guidance on how to answer specific questions like this ... without knowing the 'whole story'.
PROFESSOR OF IMMIGRATION LAW for over 10 years -- This blog posting is offered for informational purposes only. It does not constitute an attorney-client relationship. Also, keep in mind that this is an INTERNET BLOG. You should not rely on anything you read here to make decisions which impact on your life. Meet with an attorney, via Skype, or in person, to obtain competent personal and professional guidance.