My mortgage payments are currently $2,841.40/month and my property management fees are 4% (I'm striking a deal with a property manager I trust so I'm super thankful for them giving me such a low rate).

What loan type (DSCR or conv) should I be looking at and what rates?.

And vacancy rates may also increase because of the amount of bureaucracy you have to go through to place a new tenant.So again, a lot of variables.

This will be done as a "rate/term" transaction, so better rates than a cashout transaction. 

Have you switched your strategy on financing as you have more year under your belt, or are you sticking to what you have had success with in the past?

I would hate to lose the lower rate loan and not be thrilled to give up the prop 13 savings.

Nashville sucks for house hacking as most of these properties can barley cashflow anything above a positive cap rate.

This is caused by many years of low interest rates, high construction costs & supply shortages, along with high demand from millennials buying first and move-up homes at the same time baby boomers want to downsize. 

My current mortgage payment is around 2700 with interest rate of 7.15

Either could make you more money but dependent on market conditions, location, timeline, roadbumps, rates, etc.....