Money is a skill, not an object.

What is your objective?

The criteria and considerations for a primary residence are very different and like most things wife/kids/family related, the subjective/qualitative objectives are just as important if not more important. 

I'd want to see an objective opportunity cost breakdown vs doing a cash out refi/investment property HELOC.

Jason, I don't disagree with your general advice on addressing common objections.

What to invest in depends on what your objectives are. 

Let's discuss your objectives.

The objective is to leverage both time and money.

I have personal experience with that and it wasn't fun.As a general guideline, a joint venture with more than 5-7 investors may become difficult to manage, particularly if there are multiple decision-makers with different ideas and objectives.

Because of that feature limitation, I ended up swapping them out for dumb irrigation controllers.As an experiment, one time I tried leaving a pre-configured wireless access point with a tenant specifically for smart smoke detectors and irrigation controller, but the tenant objected because it meant I could potentially access their network whenever I wanted, which was theoretically true (not that I would do it).