My question is what is the best way to go about this while still being respectful and not incurring any backlash?

Once you have it you can enter the address into the Fulton County Assessors website to determine if they show it under the decedent's name.

Any good websites for accurately predicting rent ranges in a particular area (found a bunch, but would like to know which is most accurate/useful)?

The website provides very little information and only releases information with a paid subscription.Thank you,Greg Dorsey

Biggerpockets is by far the be best website if you are looking to learn. 

I'm looking into setting up my website for my Wholesaling business using "investor Carrot "and came across "REI Pro". it looks like a great system and wanted to know if anyone is using it and what your opinion of it is. 

Is there anywhere on the app that has access to the calculators and forms like the website does?

Don't worry, there's a definition on the website. 

Real estate taxes owned according to city website is $3k.4.  

On the other hand the website it doesnt seem to address anything tied to then leveraging my remaining condos based on the new higher comps created by selling the first 2 condos.