What's the objective? 

However, upon research I have discovered it is really hard to find cash flowing HOUSES in good areas in my price range. 

Once you've pinpointed your objectives, it's important to assess your financial situation.

Instead of under 15 days, they seem to be renting in the 15-30 day range. 

Remember, no system is perfect, so avoid the temptation of constantly chasing after the next shiny object.

 You may be able to secure higher leverage financing through alternative lenders than a traditional bank (not always the case) and this may help advance your objective of reducing the down payment/cash requirement but that may only be temporary relief as you will likely pay more over the course of the loan because of higher rates and fees.

I have 9 single family homes ranging in price from just 65,000 to 430,000 and I know that most specialists would say not to pay for a cost segregation study as the values of these homes are under a certain threshold (have heard anywhere from at least 500k - 1m). 

Local meetups. https://www.biggerpockets.com/forums/521Explore Auctions and Foreclosures: Properties in your price range may be available through local auctions or bank foreclosures.Partner with an Investor-Friendly Agent: An agent familiar with BRRRR deals can help you find off-market listings or properties about to hit the MLS.

OP the good thing about BP is varying opinions and also objectives.  

They would not be able to add to the portfolio as they go, though.With lower leverage in the 50% LTV range, they could expect to be in the 6.45% range on a 30-year fixed today.