Maybe as an additional safety net set your DSCR% or cash on cash return a little higher than other areas you own. 

Loan to value ratio: The higher the loan to value ratio (LTV) is, pricing takes a hit.

Until builders can catch up and create millions of homes, I think we will continue to see huge increases in sales prices, however, the lack of sellers means numbers in terms of how many houses sold will continue to go down driving prices up even higher

Short-term rentals often bring in higher income but can require more hands-on management (or a property manager).

Personally there are some really strong suburb areas that I would much rather invest into than Phila - lots of it is due to better landlord policy, higher demand for rentals, less competition for rentals, less headache than dealing with Phila, higher quality tenants and less risky.

This is why paying high cost upfront to get higher (or just making) CF isn't smart. 

Prime rental market, good quality tenants because of higher asking rent Lessons learned?

-if you can do it quickly, maybe the one with higher interest / no origination fee?

Suburban can be much higher depending on floor plan. 

Instead of tapping into a property taking out the Heloc that generally has a higher rate and a shorter term.