I talked to 2 property management companies who I should rent the house out to one tenant/one household (e.g a couple or family).

That's how it is in OH at leastThey are on a lease but according to my realtor the property manager is going away when I close the scrow and I'm taking over the tenants so the realtor suggested to get a new lease from me.

I wonder should I keep it on rent 3500 per month on an average.Property management fee : 300 Maintenance issues: 600 a year on an averageMortgage left: 350K If I decide to sell I might make 700-800K cash.

I would greatly appreciate any recommendations for essential resources, such as websites, books, or forums, that have been invaluable to your own real estate investing journey.Furthermore, if you have referrals for trusted professionals in the DC metro area, such as contractors or property managers, I would be immensely grateful.If you're an experienced investor in this region and open to collaborating with an enthusiastic newcomer, I would love to connect and explore potential partnerships.Thank you for your support and advice.

My biggest challenge was finding an effective property manager as I was not able to manage it myself.

I've contacted property management companies as well and have scheduled meetings with them as well.

While I don't own a brokerage, I have been managing a team of RE agents for over 5 years. 

Read BP books (The Book on Rental Property Investing, Managing Rental Properties, Set For Life), watch Youtube videos, etc. 

There are some good property managers over there and contractor rates are cheaper than the western part of the state. 

Having some clue about property management and tenant relation will definingly help your success in this field.