We have developed an extensive NPV calculator based on purchase/sale prices, income streams, CapEx, capital structures, and tax law variables among others.

And the ol' interwebs have to be fast enough to support 24 kids all streaming Netflix. 

If you are set of giving yourself that second revenue stream while you live there(which is a good idea in my humble opinion), you could advertise as a mother in law suite when you move out and just add the rent together for one payment.

Multi-Family Property Class C: Properties that provide functional housing; exhibit some level of deferred maintenance; command below-average rental rates; usually located in less desirable areas; generally managed by smaller, local property management companies; and tenants provide a lessstable income stream to property owners than Class A and B tenants.Negative Amortization: This occurs when interest accrued during a payment period is greater that the scheduled payment, and the excess amount is added to the outstanding loan balance.

That's correct – I'd like to start building a long term portfolio of assets that will continue to contribute to a stream of passive income. 

For example, how would you order the following, from most to least important to you (this is what a good financial advisor would walk you through):I want to live in a neighborhood surrounded by people like me.I want to live in my own house with my partner.I want to bring in as much income as my partner does.I want to have my own income stream so I don't feel reliant on my partner.I want a simple life.I will "eat bitter" now so I can gorge in []3 []5 []10 []30 years.I want my $600k to earn maximum returns since it's "play" money.I want my $600k to earn good returns with minimal risk so I don't put this gift from my dad at undue risk. 

The property is now more like a business, it will have staff, assets (golf carts, tools, etc) most like there will be multiple streams of income (laundry, etc).There seems to be a notion that bigger is better.  

Most people get into real estate because they want a passive income stream to help them build their wealth.  

Nothing is stopping you from borrowing today to start building future income streams. 

There are some good deals out there, no one is building it, the main-stream media has convinced everyone that no one will ever shop in a store or work in an office again and the tenants are a lot easier to work with than residential.