Plug it all into BNBCalc and share it so others can give you feedback- look at the tax savings via the "short-term loophole" at the bottom and learn how that functions as well as it can be a huge aspect of your investment.

From Wikipedia, Alabama has the second lowest property taxes behind Hawaii.2.

What apps should I use for setting up a system to invest in tax deeds?

I think the tax benefits combined with building equity is the goal, cash flow is not a major issue thankfully with our household w2 income.

Since you requested any book recommendations, I wanted to point you towards Tax Free Wealth by Tom Wheelwright. 

If your parent’s currently occupy the home, at death if you move in you can get their property tax basis. 

Definitely discuss w your tax advisor too.  

., 17.5 years remaining for residential property).New Schedule: Simultaneously, start a new depreciation schedule for the additional cost basis attributed to the replacement property, following standard timeframes (27.5 years for residential, 39 years for commercial).Option 2: Treat as New AssetCombined Basis: Treat the entire cost basis of the replacement property (carried-over basis + additional funds invested) as if it were a newly acquired asset.Single Schedule: Depreciate the total cost basis over the standard timeframe for the replacement property type (27.5 years for residential or 39 years for commercial).If you choose option #2, you need to file an additional form (4652) with your tax return. 

If its a 2-4 unit you only need 15% down using a True Portfolio program and you have DSCR as a back up that uses the STR rents to qualify and avoid personal tax returns or income.  

Consult with real estate experts for guidance on legal obligations, tax consequences, and financial strategies.