A purchase of $209k, $15k rehab, and ARV of $240k doesn't get you any thing back after you factor in all of the closing costs to purchase and to refinance.

There are more factors than just the community (#beds, level of theming, location to the amenities, style of home (single family, townhome, condo) and others) But I would strongly advise to stay within some of the same communities you mentioned like Storey Lake, Windsor Hills, Championsgate and a few others if cash flow is your goal.

Meanwhile, the sellers who are most likely to offer creative financing are normally the owners of  real estate that have issues.....condition.....low barrier/over supply market......or perhaps pricing issue, and one of these factors is why its not marketable in a arms length transaction and why creative financing would be accepted.

Financing is important but your realtor will absolutely be the determining factor whether you purchase correctly or not. 

MTR's provide better rents than LTR's with less of a headache, turnover & exposes than a STR.

Factoring market conditions at the time of refinance, I negotiated a lower rate and conceded a lower term anticipating rates to normalize in the 4%-5% range by 2026.

Just factor the cost into the rent.

I've included an example below to help illustrate this.So different lenders have different rates (which do vary even for DSCR loans) but these are factors they all consider.See example below:DSCR < 1Principal + Interest = $1,700Taxes = $350, Insurance = $100, Association Dues = $50Total PITIA = $2200Rent = $2000DSCR = Rent/PITIA = 2000/2200 = 0.91Since the DSCR is 0.91, we know the expenses are greater than the income of the property.DSCR >1Principal + Interest = $1,500Taxes = $250, Insurance = $100, Association Dues = $25Total PITIA = $1875 Rent = $2300DSCR = Rent/PITIA = 2300/1875 = 1.23If a purchase, you also generally need reserves / savings to show you have 3-6 month payments of PITIA (principal / interest (mortgage payment), property taxes and insurance and HOA (if applicable).

When you pay cash for a $400,000 home and rent it out, your rate of return will likely be less than 6%.You could invest in stocks and earn 7% or better.You could put the money in a high-interest savings account and earn up to 5%.I don't understand why anyone would pay cash for real estate, erasing many benefits that increase the rate of return, while exposing themselves to the risk of loss (turnover costs, bad tenants, capex, etc.). 

Look at factors like proximity to jobs, schools, transportation hubs, etc.