In some areas of the country, people would tell you this is not a good enough rent to purchase price ratio, but rents in this area are sky rocketing ($1250 for an average 2 bedroom). 

Tenant turn over is consistent with industry average.

The property Expenses yearly with the mortgage payments are roughly going to be $22,000 and average income the last 3 years has been $65,000.

An LLC is a good idea but if you purchase with a conventional loan or many other loan products they will require you to put the property in your name. 

Right now, the average 3-plex in Boston is listed at $1,293M, where the average 3-plex in Plymouth County is listed at $513K and Bristol County at $286K.So my advice is to look to the south.

1) Dollar cost averaging by buying a couple SFHs rentals each year and 2) Avoiding debt until the next housing correction. 

. $800 a night was the average and they had about 50% occupancy.It may be worth giving it a go and just leaving everything in it.

-you don’t have to pay interest on a large fixed sum of money until you find or are ready to pull the trigger on a deal-it allows you lock in some or all of the amount at a fixed rate so your protected against rising interest rates ( given the current market conditions I believe we will see a couple more increases from the Fed this year which will increase borrowing costs for any variable rate products)- See this attached article that does a good job of simplifying it https://www.investopedia.com/mortgage/heloc/fixed-rate-option/

There is one section for Average price.

The "50% rule" states that one can expect expenses on a long term average to total to roughly 50% of fair market rent, where the expenses include property management fees and capital improvements also but exclude principal and interest payments; principal and interest payments come out of the other half of the rent, and whatever remains is the net cash flow (if any remains).