Greater Charlotte is a banking / finance hub (BofA, Wells, etc.) and strong tech presence (Microsoft, Amazon, etc.).

The location is becoming a hot bed for the tech industry for Microsoft and Amazon implants, Valve etc. 

I would keep it, Microsoft is building more in Redmond, Bellevue is only getting hotter. 

In 2000, I lost $1 million in one day when our great government made Microsoft split (whatever that means).Investing in real estate and the stock market wisely is similar.

You might provide a lot of value to other landlords if you could get feedback from other posters here, and then make a Microsoft Word version of this letter and upload it to our Fileplace.

While I don't use a paper ledger, I do a similar bookkeeping with Microsoft Excel. 

It's flexible, cheap (no membership cost if you already have a Microsoft office account), no privacy concern, etc.

Microsoft, Apple, etc.   

All office software suites (Microsoft Word/Excel, Mac Pages/Numbers, Google Docs/Sheets) offer this functionality.

It sounds very custom, but I think all Excel OS Microsoft 10 and newer have a built in Amortization Schedule that you can start with, maybe make an original then copy that sheet and in the second sheet play around with it.Very Unique ask and would love to hear if that goes through and how you set up that type of payment!