SFH investment 1031 into MFH investment/primary?

[Kezia Edmonson]

Old unit: Have a single family home which is, and always has been an investment property. Planning to sell; approx 350k net. 

New unit: 4-unit multi family in which 3 units (with existing tenants that will carry over from seller) will remain investment; I will move into (currently empty) 4th unit AND USE as primary residence with primary mortgage. Approx 800k 

Can I 1031 old unit into the new units?