You can also go straight to the source - Direct DSCR Lenders - don't necessarily need a mortgage broker to shop for you (especially if you are here and asking the right questions and clearly are sophisticated - unless you are SUper-strapped for time, you don't seem like an investor that needs to pay a broker for help - go straight to the lender)3) Last question- i'm seeing rates on DSCR loans in the 7.2% to 7.5% range, in addition to 1 to 2 points and they likely track 10 yr treasuries (4.26% as of today).

And shop around!

Also, when picking a lender, make sure you pick one that is very familiar with BRRRR strategies, has access to hundreds of lenders to shop the best Hard Money and Refinance partners for you, and that can give you advise on the front end.  

*Neighborhood drive bys could get you shot.

I’ve personally house hacked in the Irving park neighborhood in Chicago with a multifamily so not completely relatable experience to what you’re looking to do but hopefully can provide a few insights.If you go with the suburbs in a SFH, you could rent by the room and presumably increase cash flow.

That means no HOA neighborhoods, which rule out many places.  3bedroom might make it tough to work, unless you're sleeping in the laundry or garage and renting full 3bedrooms. 

With room to enhance its value through upgrades, we saw the opportunity to deliver a strong return while helping revitalize the neighborhood.

Comparing Amazon to Bitcoin is like comparing your local pawn shop to Walmart. 

If you start in an affordable Sunbelt city like Birmingham or Montgomery, for example, you can acquire a turnkey rental in a B or C neighborhood for around $120,000.

Not as walkable, however, as some of the neighborhoods that you have referenced here.