Question about what I should do with my first Rental in Denver!

[Emanuel Caldera]

Hello Everyone, I am wanting to get some insight as to what others would do in my situation. 

I have a home that I own in the Denver area and currently have about 250k in equity after paying the agent fees. In todays market even. I know that will go down eventually if homes are staying on the market longer and as rates slightly rise. So worst case scenario I am thinking would be I walk away with 200k and lose out on the $350 it is currently cash flowing monthly or should I pocket the 200k and look into getting other properties either here in Colorado or possibly out of state? I want to grow my real estate portfolio just don't know what I should do next.

Thanks for reading and helping out!