@Jeffrey Hanson NREIG will not be an option for an Owner Occupied property. 

There are lenders that will do them, to be sure, but the easier way to proceed is on an owner occupied house. 

If all units are the same size 1/4 of your $600k sale, or $150k of the proceeds would allocate toward a 121 primary residene exclusion (assuming you owned and occupied it for at least 2 years) and be tax freeThe other $450k would qualify for a 1031 exchange. 

I came in with a conventional loan and ensured them I had no plans to occupy the property.

I came in with a conventional loan and ensured them I had no plans to occupy the property.

Tenant PoolThe only way to consistently make money is to keep the property occupied by what I call a "good" tenant.

My first house hack was a 20% down conventional owner occupied loan.

And I know the very basics of the loan, such as you (typically) need to occupy the property for a at least a year. 

Of course, a realtor and a mortgage person are going to tell you to rent one and buy a new one, but why would you move out of your home that you've lived in, just to owner-occupy another single-family that you will probably not like as much, just to get minimal cash flow out of the house you put the work into.

Obviously, much of the following is dependent on the individual, but non-owner occupied investments can be in the 3-4% range (this rate can even go lower if it is owner occupied!)