The high down payment is necessary so that the DTI ratio is within the range to be qualified for a conventional loan. 

I'm not sure what law are in your state so can't comment on whether failure to pay the deposit is sufficient grounds for eviction but I would suspect it's not.

Expect  max combined LTV's (First mortgage plus second) on primary homes in the 90%+/- range and on investment properties expect 75-85% LTV. - Realtor Referrals.

I knew several people who had an undeniably great stretch (probably in that 20% range) until the GR and FC hit them in the face. 

The duplex/SFR I have been buying have ranged in 0.95% - 1.1% of monthly rent to purchase price.

First: Define “good.”Second: Why would any owner want to leave money on the table, especially money sufficient enough to make a market deal a “good” deal for the buyer?

In that price range, you will likely be looking at 2 or 3 bedroom houses around 1000 square feet.

I'd like to echo Brian's idea on considering hard money lending as potential strategy.Hard money lending can offer similar to even higher returns compared to traditional real estate investments, often ranging from 8-15%, providing the cash you're looking for even in A/B areas.

From there you can drill down on properties that would be in your range and use the platforms like Airbnb to check on the health etc. 

The main thing is to have sufficient reserves because stuff will go wrong in a house like that and it’s typically more costly than a newer home.