Nuclear would be ideal if not for these glaring issues: waste, possibility of proliferation, and potential mathematical certainty of disaster.

Real estate is a mathematical equation ,it’s simple math and that math should equal a return .that return means it’s a strategy , this strategy is taking you towards a goal, the goal is the reason you’re in real estate many people think that 4 walls and the roof is the reason you’re buying it real estate .

However, if you're just buying turnkey and do not have a value-add to force appreciation (which is much more mathematical and "owned" in multi) and create the appropriate equity spread, you won't be able to refi your money out and repeat the process leveraging the same capital.

Learning all the different aspects that make a rental a long-term success and how they fit together mathematically so you can make conservative, fair judgments about how much cash flow you'll receive on average vs the amount of risk you're taking on.My advice to any new investors is not to invest in anything below $50k.

This will mathematically save you the most amount of interest in the long run, every time.

Looks like that is the amount of interest savings that can be directly attributed to the $130k pay-down itself.9) For fun, lets try one last mathematical 'verification'.

That being said, early loan pay off doesn't make mathematical sense in most cases. 

Your plan has to fit your life not be the most optimal mathematically.

If, on the other hand, you will not be OK, and you view RE as your ticket to get to where you're going, then by staying on the sidelines you are loosing - you opportunity cost is very high in this case, and you need to take the opportunity.We could get quite mathematical about it, but why?

I guess mathematically speaking, it would be best to rent my current home that way that guarantees me an investment loan with a great rate and cash flow for sure.