Pumping Cash flow back into mortage

[Brendan Blake]

Newbie to the site and was wondering if someone could shed some light on the pros and cons of instead of taking positive cash flow out of the property, to in turn use a shorter term mortageg with higher monthly payments. Excess cash every month would essentially pay off more debt in the property and then use a 1031 exchange to move to a bigger property, all with the hope of avoiding the tax man. Anybody have any insights if this is the best way to grow a portfolio?