- I'm seeking to learn by experience, but only after learning the fundamentals (the math) and then jumping in.PS - I really enjoyed listening to the podcasts of James Wise, Cory Binsfield, Mike McKinzie, and liked listening to an L.A. investor who invests in out-of-state (I forgot his name, but remember his Milwaukee partner's name is Dawn @ Core Properties). 

Hi NA Col, Welcome.1) I'd personally lean towards a cash out refi especially because interest rates are ridiculously low at the moment.2) I'd focus your math and scenarios around how much, you mentioned student loans, can you comfortably pay off, and still have enough cash on hand to make another deal. 

However, I still recommend doing a little homework or have your agent do this, as there can be differences in exclusion between the carriers on how they cover each business.

Don't do the minimum payments on the 15% loan-do the math and figure out how much that is really costing you. 

@Yifan D.You did your homework, thumbs up.

The first time it happened I contacted support via Twitter (@airbnbhelp), and asked them to do the math for me, and they showed each day's price, and the total was correct.

You're going to need to do your own homework on market rents, though, and the same for the ARV.

@Christine SierraBest advice- buy right, buy smart, do your homework.

That becomes a cost-benefit math problem.I think if you can add some space AND in the process create a second unit, with a separate entrance, that you can rent out separately from the rest of the main house, then you could potentially be on to something that really moves the needle.

Run your math.