If I can get from point A (drawing up plans) to point B (finishing the build and renting the cabin as an STR) I know that this thing will be a cash producing monster with a fantastic ROI.

DSCR would be the easiest route and then you can rent all the units instead of living in 1 and cutting your cash flow to 2 versus 3. 

Like @Stuart Udis said, most of the time its more cost and time effective to do cash for keys and throw a few grand to hopefully vacate so you can change the locks.

Nothing wrong with that if you can avoid owing Uncle Sam a bunch of cash that can be used as a down payment to buy more REI!

My wife and I buy the homes with cash we borrow from a hard money lender. 

I am having a hard time finding anything that cash flows with a down payment from 20% - 35%.

Purchase price: $100,000 Cash invested: $35,000 Purchased for 100k, Rehab 40k, resale for 190k.

Unit A is about 100 years old and Unit B is almost completely new.Pros:-The duplex is in a very desirable neighborhood with home value appreciation year over year at about 50+%-Rent is also in high demand within this area-Cash flows well even with high interest rates and increasing property taxes-Home is price below average cost per sq ft-The house has been renovated and some parts of it has been remodeledCons:-All issues are with Unit A, the 100 year old unit.

If you can get half your mortgage paid and retain some of your cash for the rehab (or get a loan that includes rehab $$) you should go for it.

What cities do you see have a fair entry point that cash flows not in a crime filled area?