we are using REsimpli for our CRM and they can pull data etc. its pretty much a one stop shop for running an investment firm/renovating/wholesaling.

There are neighborhoods across the US where you can take these vintage properties, undertake complete renovations with all new mechanicals, roof etc. and come away with a properties  that costs far less than building the identical building with todays costs.  

I wish I bought more in this neighborhood.

What are some of the best techniques to shut down those who protest against landlords who want to charge high rates in a neighborhood facing gentrification?

i offered on one i really, really wanted last month in a neighborhood i own a rental in. 

I don’t know the neighborhoods or market in Jacksonville but @Jay Hinrichs might.

Then start shopping for houses, don't engage in FOMO or real estate agent pressure. 

What are the different neighborhoods like?  

Can try to reposition to Class B, but neighborhood may impede these efforts.Vacancy Est: Historically 10%, but 15-20% should be used to also cover tenant nonpayment, eviction costs & damages.Tenant Pool: majority will have FICO scores of 560-620 (approaching 22% probability of default), many blemishes, but should have no evictions in last 2 years.

Shop around if you can to determine what is a good rate to pay.