You can use the Roth IRA to purchase, in a self directed IRA (SDIRA), but investing in a tax deferred investment (RE) with tax deferred funds (IRA) defeats the purpose of the tax deferred advantages.

That being said, I'd rather delay for a "sure-fire" method (lease non-renewal), rather than do something reckless in a way they could defeat or push back in court, if it came to that. 

Using other loan types not only are non-conforming for you to occupy (DSCR), but the downpayment minimum and the rate will be much higher kind of defeating the purpose of doing a house-hack. 

I would not say it defeats the purpose of the tax advantaged account having to pay taxes, as the leverage could create returns well in excess of such taxes.

What you propose defeats the purpose of buying a rental.1)  You buy rentals for cash flow.  

When I first moved in the thing never turned on, so I set it really low, but with the heat we've had it runs all day and night, which defeats the purpose I think (air is too hot so it just runs).I thought my fan had 2 dials on it, one for temperature and maybe the other was humidity.Regarding the fire issue, if there is a fire in my attic I'm not going to notice until it gets lower in the house, and by then there is ridiculous damage to the house anyway.

A refreezeable ice pack will defeat your expensive thermostat and the tenants know it.

I don't have the dream of working my real estate as a replacement j.o.b. because that would defeat the purpose.

But doesn't that generally defeat the purpose of investing?  

Instead, even though it may seem like a defeat in the moment, offer the girls money to make them go away.