We lived in Illinois until mid-June of the year and my wife worked for a company headquartered in Florida starting Jan 1st through the end of the year.

....I had income from my self-employed business in Jan and Feb (only) in Illinois and the family moved to Florida in June. Florida does not have State income tax. So do we file our regular Federal return + apartial return for Illinois for my business + file her income in Illinois for only the dates that we lived in Illinois and then pay no income tax for the rest of the year in any State? And can we deduct any closing costs that we did not expense to the company in the move?