Quote from @Thomas Zuck: I have one project under construction with them right now, the communication is non-existent, unless you reach out first.

Just don't combine old and class D unless you have a very good reason. 

I have a dilemma on which direction to begin first.

What is the appreciation, condition, community, class level and vacancy rates?

My first duplex was a turnkey, off market property.

It's meant for gap financing, so you can't compare it to a DSCR or some other kind of first position financing.  

I'm looking at Class B properties in up-and-coming neighborhoods and plan to self-manage once I relocate.  

one of my clients that has a pretty big PM company.. had a unique way of doing this.He offered 50% of the first months rent or 500.00 minimum.. he would have 4 or 5 agents at the weekly meeting handout the list of vacants .. each of them would go place a sign in the yard and first come first served.. he found that potential tenants would call the first sign if no answer they called the next one until finally someone answered.. it worked pretty awesome for him. 

It's a spacious 4br 2.5 bath with finished basement in desirable school district in a B Class neighborhood.

After 5 years in the business I’m starting to get a few word of mouth referrals which is how I closed my last property which was my first off market deal.