Have you ever thought about just doing a HELOC so you could just access the mortgage, refinance the newly purchased house six months later, pay back the HELOC, and then have instant access to that money again?

Instant cash to purchase other investment properties or someone paying off your condo for you with a bit on the top every month?

While Fixing and Flipping is minor fixing and instant profits.

I hate to be a debby downer, but if it's on market and isn't gobbled up within a week or two there is probably a reason why... most good cash flow deals sell instantly and are off market deals purchased by cash buyers. 

So, if I were to sell it by 2020 (within 3 years of turning it into rental), I pocket the entire capital gains on the property (roughly $65k) but I will instantly lose my $750/monthly cash flow from rent as well as depreciation I each year.

It's currently off market and I can put it under contract in an instant.

He instantly replied with "Well let me know when you do I've been looking to diversify my investments and I'd love to invest in RE with you.

what is Zillow instant offer ????? 

If you can find a property that needs work and buy it at a price that will instantly build equity after rehabbed then finance it properly, you should be able to cash flow.

I buy houses that have "instant equity".