Here's the deal. The visas will not be issued to your husband/child if YOU don't demonstrate that you have, or will soon, relocate to the US.
Thus, NOW is the time to have a US address ... with someone checking the mail for your.
Get your driver's license in the US ... get a job in the US ... .difficult to do????? talk to a lawyer.
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.