Other option is find a partner who will contribute the cash and you can use dual incomes to qualify for the mortgage.  

Examples:44109 (median home price went from roughly 50k to 125k in 8 years)https://www.zillow.com/home-values/77009/cleveland-oh-44109/ 44102 (median home price went from roughly 30k to 120k in 8 years)https://www.zillow.com/home-values/77002/cleveland-oh-44102/ 44106 (median home price went from roughly 100k to 200k in 8 years)https://www.zillow.com/home-values/77006/cleveland-oh-44106/ It has the highest rents on average in all of Ohio for major cities and the median income is not even in the top 3.

With the Duplex now, my understanding is I file as though the rental half is a separate property and cut all expenses in half as a write off to my rental income (property tax, insurance, maintenance, improvements, etc...nothing was done specifically to either unit it was full home external work like garage and railing repairs, painting) as well as depreciating the half of the duplex that is a rental after calculating basis.It all seems very straightforward to me but I know I'd be naive not to have a second set of eyes with a professional given my lack of experience.

No "significant" need for more "equity investing," time for debt or income investing. 

DSCR also does not look at your income i.e. taxes, W-2, paystubs, etc but rather will look at the potential cashflow of the property. 

It is more properly called " Tax Deferred" Income.

The is a work at home scam where they say you can work and make a income wholesaling. 

Looking to refi based on the value after rehab based on rental income/cashflow (expecting it to be around $200-210k value) Aiming for $150k loan for paying off current mortgage and covering remodel/rehab costs on my propertyIs this doable without a significant down payment?

Buying a SFH to live in with no generation of rental income is NOT an investment but a lifestyle choice.  

Plus taxes and insurance of $20000+ X 10 years= $200000You will need a $1,010,000 loan at 77% loan to value of $1,300,000 to pay them in full.You will need a FICO of 720 and $27000 monthly income assuming you don't have credit cards or car loans... assuming Jumbo loans are qualified similar to how it works today.