Simon,
That's really good advice, and I honestly never thought of it from that perspective.
We actually had no choice but to refinance this way because I am using a VA loan, and due to some debt to income issues, it was the only way we could do it. We bought the primary with the plan to refi in 6 months to get rid of PMI, which is where we're at now.
Perhaps in the future we can reverse our mortgages to put the equity back in the primary.
However, our primary loan will be ~700k, and will appraise around $750k, so paying it off isn't an option right now.
Since rates are still so low right now, wouldn't the best idea be to acquire as many rentals as possible rather than pay off the primary first - ensuring 100% cash flow as the mortgages are paid off?
I'm thinking that as housing prices rise, if SHTF, I can always dump one of the rentals and use the profit from appreciation to mitigate any crises.
Is this a risky/unwise way of thinking?