I hope to switch over to their gateway box instead of remote readers soon so I can access data from the internet.

The fact is you can’t make a good decision with out all of the data and she can handle either option sell or 3rd party manage. 

If you are using a broker, they are trained to compare values from different data points to assist you in coming up with your price.

https://www.statesman.com/news/20190418/austin-region-fastest-growing-large-metro-in-nation-8-years-running-data-shows  Its job creation that is always the driver...

Groundfloor recently posted an empirical analysis of estimated ARV for all loans that subsequently repaid in 2018.The data shows that the median predicted value was 4.7% lower than the sales price, while the median appraisal value was 8.6% lower.

.#2 Explore Lowes and Home Depot to Learn About Material PricingTake a tour through Lowes and Home Depot (or their websites) and look at finishes materials and fixtures that you will consider using in your rehab projects.

Also in the news this week that NY lost 48,000 in population in the last year:https://www.pressconnects.com/story/news/local/2019/04/18/population-loss-plagues-new-york/3482885002/and several articles have noted that the number of TAXPAYERS in NY is dropping faster than the population:https://www.timesunion.com/local/article/Study-finds-New-York-losing-the-most-tax-payers-9223778.php Draw your own conclusions about this data.  

If the sales data doesn't show buyers are willing to pay more for the systems, then it's hard to justify a bump in value on an appraisal.

Real estate agents and appraisers have access to their local MLS (Multiple Listing Service) and can pull all the recent sales data for a particular area. 

Look at the data over a long period of time.