As large investors entered the market to acquire single family houses, our margins were squeezed and we ultimately could not maintain our target investor returns as the market totally changed.

A nice 3 bed 1 bath around 1200 sq ft is easy to buy, cost very little to maintain, rents easy, and is easy to sell to another investor or a homeowner.

Even then you would still need to actually go get the license and maintain it.   

Otherwise, I am the guy who answers questions, texts guests etc.The key to self management is setting things up and maintaining.

Since you retain control of your money, how does one consistently maintain 30-50% cash on cash return? 

I have part of a 401K loan to payback and money borrowed against my HELOC.2) Maintain a yearly savings rate above 55% for 2025.3) Purchase another rental before the end of 2025.

Maintain good business practices an carry a decent insurance company.

You'll be able to maintain most of your capital and you'll learn a lot of useful skills. 

Also, can I stipulate in the lease that the tenant has to maintain the lawn and shovel the driveway and walkways, or am I required to pay a vendor?

What is the appropriate level of cleanliness to maintain during project work?