My sacrifice… no haircuts and no fast food. 1 job full time, 1 full time side hustle. 0 debt at the time other than student loans.

Additionally, not all transaction types support Locations, meaning you'll have to create journal entries to correct them—requiring a solid understanding of debits and credits, which can be time-consuming and error-prone.Instead, I recommend biting the bullet and upgrading to QuickBooks Online Plus for each entity.

Each of your sales will need to have overlapping time frames (45 days to identify and 180 to close).

Do that enough times and you'll eventually find a deal you can afford.

I work with investors all the time in your situation.  

Many thanks for your time.

One thing that I screwed up a few times was this - don't do everything the way YOU like it, try and think like everyman....

I think he spends most of his time on his coaching program, when he should be focused on his investors returns. 

A tax pro will not save you time or effort but they may assist if you're unsure. 

Your son is responsible for making payments on time or ruining this seller's credit.