Watch out for egress (windows or doors) as well.  

Buying a portfolio might lead you to making decisions you don't have the experience and foresight to make well.

I remember being 30 minutes into a call and him saying “alright well I don’t know what else we have to talk about.”

Well worth the money.

The main thing being: giving up a property that appears to have appreciated pretty well is just a touch pill to swallow and I've regretted a few moves I've made when put in a similar situation to yours, and I had less equity in mine.It sounds like you're moving to Raleigh in the near future and want to buy a multifamily to househack.

Filter changes are a good time if you have them as well.

Consider cleaning, lawn care, snow removal and supplies as well as utilities  in your calculations.  

I have another rental a few streets away that has done very well.

You can find flat rate listing agents as well for probably $1000 offer buyers agent $2K so they will take the time to show it. 

He is a wealth of knowledge on the area and is actively investing locally as well.