Are you a US citizen or a permanent resident? Is your wife outside the US? Please see
Mr. Shusterman is a former INS Trial Attorney (1976-82) with over 35 years of immigration experience. His response to your question is general in nature, as not all the facts are known to him. You should retain an attorney experienced in immigration law to review all the facts in your case in order to receive advice specific to your case. Mr. Shusterman's statement above does not create an attorney/client relationship.
Once the petition is approved thing move pretty fast. As soon your spouse have all the necessary documents for immigrant visa she can schedule an interview in the embassy.