It can come in an interest-only variety or an amortizing variety (principal and interest). 

We'd still be paying the $137/month in PMI (which kills me to think about the waste of $42K over the life of the loan) and only be paying interest payments unless we can afford to pay extra for principal.

Principal paydown, tax advantages, low down payment, monthly cash flow.

Do you consider a property to be negatively cashflowing if the “negative” portion is actually paying principal?

All extra contingency, inspection, credit from reno costs is applied to your principal loan amount (you don't get your $ back from Fannie Mae!).

From what I have read, investigating the principal (company) that is putting up the offer to invest in their project is one of the most important factors, along with making sure the information presented matches the investors' portfolio needs.

If you gactor in that rents should have increased over 5 years you can use that to offset even more without cutting into cash flow.That being said, I have started to make extra monthly payments towards principal on the notes that will come up in the next 3 years for refi, which will bring the baloon amount down significantly.

I usually tell buyers that every $10,000 borrowed results in monthly PITI (principal, interest, taxes, & insurance) of approximately $70-$80/month.

Then the title company discovered there's a judgement on this person and proceed with paying back the judgement, the principal with interest was about $56k.

HML - 90% downpayment, 13.75% 6 month payback period, interest only Personal loan - 13.875% no money down, paying interest and principal.On a 30k rehab loan with 7 year term, I'd pay $555/mo ($355 in principal pay down and $200 in interest). 30k increase in my HML would result in $343 increase in monthly payment So the choice is: Pay down personal loan, lose more money out of pocket till refinance, smaller DP on HML VS lose less money, larger DP, and having to pay full amount later.