Having multi-family units will enable us to ride out the expected down turns and provide us with cash to scope up more properties when properties value drop. 

In a few years extracting the knowledge I have gained over the last 15 years, they would be steam rolling over my old "35 year old" a$$ and making everyone in thier path allot of money, including me and ?"

Relationships will probably get you a job (or find you a mentor, or partner, or enable you to start your own business). 

How can you make moving every 2 years worth it (a killing) if there isn't 30% fixer upper profit to extract tax-efficiently in "E"?

If I do the 2nd scenario above, I can only buy 1 house per year, but the 1st scenario enables me to buy 2 per year.  

I haven't done the volume to extract that kind of insight.

This may afford you access to the MLS and enable you to earn commissions when you buy and sell properties.

But,Pros:Tenants will be less likely to act up knowing the landlord is blocks away.It enables more of a community, where you aren't just the guy that collects checks, but gives you an opportunity to invest in shaping the kind of neighborhood it is.

This would allow me to pay down my mortgage early under either of these two financing options, something that would enable me to remove PMI quite soon or minimize my exposure to interest rate increases.Which option would each of you choose were you to be in my position?

An agent would / should have extracted what was needed (e.g.