I’m particularly interested to see if any out there that would assist with the BRRR method of purchasing all cash for a discount and then value add, place tenants and refinance.

Unless they are some kind of prepper who is hording gold and silver for when the world ends.Your time is better off spent researching more practical real estate methods.

I am intrigued by the BRRR method, as a first time investor with rehab skills.

Another Evaluation method I have been researching is the cost approach, which is also detailed in the article. 

Use the Enemy Method to see what everyone around you is doing (if you haven't already). 

Meaning, the STR method hasn't been tested yet. 

There was also an additional bonus – the more properties I purchased each month, the higher the percentage.I felt this was a very economical method of handling the research on judgments and liens.

Using her methods has made things a lot easier, especially since we've grown from 6 units (2 properties) that first year to 16 currently (5 properties). 

Also, it could be that mileage vs actuals is a better method for your vehicles, so not logging that cash income is really hurting you if you're going the mileage route.Get yourself a better system, even if it's just a spreadsheet because, at this point, anything is better than what you've got now.

Both of those methods will enable you to avoid the withholding.