In addition, I feel like if I have to pay PMI, I am not ready to purchase another property.

The best thing to do is to speak with a lawyer that specializes in landlord/tenant relations and see if they have any additional suggestions

That in addition with checking the rental history kinda helps find the good tenants.I didn't have any big issues with Sec 8 Tenants there. 

I am new to bigger pockets and currently owe a 3 unit rental property with the intentions to buy additional rental units in the next couple of years. 

Legal Fees $2400 Deposit Required for the mortgage - 20% - $35,000Right now rehab - 22,000Property improvements and correction of deferred maintenance over the next 2 years - additional $24,000 Mortgage payment - 871$ / monthWater - app $200/monthProperty Tax - app. $300/monthGrass/snow - quoted by a local company at $274/month (1800 for snow for the year, 1500 for grass for the year) Insurance - $140/month (got a great rate not cheap insurance) The heat source and hot water is natural gas, New furnaces and water heaters installed in 2015. 

In addition, your holding costs are way too low.Holding costs - Prorated property taxes, Insurance, Utilities, Interest on loans, LandscapingBest of luck!!

I think the relationship with the landlord was fine and dandy and then this came as a surprise addition (the "no friends/guests without extra pay" part...forget boyfriend...this holds true for her sister, mom, dad, ME!

Additionally, if you are able to become really good at navigating the new tenant laws this could be a competitive advantage for you.

Now, I know the object is to keep expenses low and profit high, but could a few simple additions increase your bookings?

Should I take out a HELOC or HEL on my primary residence, and use the funds from that to make a down payment on additional properties and then obtain a conventional mortgage on them?