What do these softwares - propertyzar, simplifyem and tenantcloud - have the ability to do that an Excel cannot?

OnSight Pros is an excellent company.

@Eric Hrlbock Excellent !

For analysis and etc excel would be best to use.

I also closed one another property in NC which is in excellent location and is doing good.

I have used Coach Carson's recommended spreadsheet from "Woman Builder" (linked), and it's excellent for listing all the various cost categories I may confront on a project.

Or maybe just use a "portfolio" loan instead of waiting the 6 months...and therefore receiving a higher rate, or a 15 year loan, or an adjustable loan...or all three...to avoid that tax. 

I would watch out for caveats with the strategy, and double check it of course, but I think this is just a "pull out excel" type of solution and compare the ways to go about it. 

So now you open your excel sheet and type in the numbers to calculate if you had a loss or profit.

You should use a credit partner because they have excellent credit that allows you to get a very good loan.