For the BRRRR method, this would likely be more advantageous to you.

You would be better off watching some of the old webinars here on BP and then reading a few books. 

So your results will be a degree lower than local investors. 

As I mentioned my only question would be something hopefully Dave or someone else can answer.

Will they have to be auto programmed to hang up and never call again if so requested? 

well you dont say how much you have in it.. but if you can sell now and lose 10k and get out of a HML that would be my suggestion.HML  if they go into default interest and you could look at losing quite a bit especially if your HML is one of those that are not forgiving and wont give an inch on what they are owed.

You may be declined for not being an owner occupant, but it will still buy a little more time.

With current interest rates (at least in Canada and guessing the US is similar), you'd be further ahead investing that money elsewhere and continuing to let the tenant pay down the mortgage with their rent. 

I'm an investor/agent/property manager in that area and would be very interested in hearing more about the property. 

With how much equity you have in your primary if it was me I would think about doing a cash out refinance for the whole thing as rates would be lower.