Sell a Condo purchase home Rental unit & Primary Residence

[Jack Bradham]

Here is the deal, I am selling a unit I have had for 20 years and lets say it goes for 350k. I have a property I would like to buy for 610k that has a single family home and a rental unit in the back. The rental unit is over a garage and rents for about 800 per month. I would live in the home out front so my kids could be closer to school. 

I want to 1031 the money from the property? Any pointers would be appreciated. Not sure this is even legally possible.