So anyway one can pay the  20k and get some basic theoretical knowledge but one should be realistic this is a big cash up front business.. your not going to find consultants doing this work on the come.  100% agree.

Unless you have an immediate need for the cash I'd wait until I could pull out the extra $40k. 

  $6k per month and $30,000 to get it going and it cash flowed about $20k a month. 

They should pay just like someone on a regular lease pays - cash or equivalent into your bank account. 

This does not align with buying most buildings in cash.Once you progress in your investing efforts you may come across more UHNW individuals, family offices and institutions who would take the lower return for limiting risk (all cash deal).

When does the cash flow start? 

They only accept cash.

I suggest you buy fewer but better properties for better cash flow and appreciation. 

Cash flow great.  

This^^^^^Unless he is loaded with cash reserves and can take a loan out based on his liquid reserves.