To sustain my current lifestyle, I'd need about $6K/month, but that would not be enough to let me build up additional funds to pay off more debt or acquire more properties (with my own funds), so I'd like to aim for higher.At the same time, I do also want to build for potential of increasing net worth, which is why I started acquiring the Orange County properties (whether those were good or bad moves...). 

National corporate retail businesses build up reserves during the boom times so they can stay in business  during the downturns.As far as sourcing properties that is what a commercial broker is used for.

@Glenn Primack, having too much cash buildup is certainly one of the better problems to have with your business.Upgrades can be from a mild aesthetic upgrades (refresh paint on the trim / light posts / mailboxes), more expensive renovations (landscaping, new garage doors, new air conditioners in units that need them), or major projects.  

You can see some of the signs inventory is starting to build up, a few months ago we had 1.9 months supply in Utah County and now we 3 months worth.

Do a couple build ups in gloss and the last in a matte or lower sheen finish.

Huntsville is huge beneficiary of the money.Also,  FBI Headquarters moving there which is 4100 jobs.Also, they are slated to receive $54Billion in funding money for Army Defense for Huntsville as part of Trumps Army Build up program.Huntsville appreciated over 6% this last year, which is a lot for a cashflow market. 

You will be able to build up funds for a down payment and an emergency fund more quickly without your current car.  

Take advantage of the kidless time you have and house hack and build up rentals for a couple years, then when you are ready to start a family you will be in a much better position.

Over time, $$ will build up (cap ex, maintenance, etc) making it difficult to understand what is what.

My problem right now is I'm currently living in one of the most expensive areas so it's very difficult to find a local property which would meet the criteria of an all cash purchase where I could then refi in order to pay off the LOC and still keep my rental.I'm hoping for a slow down in the market eventually while I build up more equity and I'll ready to pull the trigger for the all cash purchase.