If you are interested in a quick Payoff, you could just increase the monthly payment to Principal and achieve the same thing, or possibly even better. 

Assuming $1,500 rental income per month below are my monthly expenses:-Principal, Interest & PMI: $618.82-Property Tax: $289.14-Insurance: $208.33 (can probably be reduced by shopping around)-Water / Sewer / Gas: $45-Electricity: $40-Lawn Care: $70 / month (summer); $35 / month (winter)-Vacancy: 5% of $1,500= $75-Repairs: 5% of $1,500 = $75-CapEx: 7% of $1,500 = $105TOTAL EXPENSES = $1,523.29.As you can see the expenses are higher than the expected rental of $1,500.

We need time to save and accumulate principal to invest in future development anyway.

Lower interestTotal Payments: 51,677.40Total Interest: 32,773.25Total Principal: 18,904.15Balance: 169,095.85higher interest w/ CBTotal Payments: 59,461.80Total Interest: 43,706.27Total Principal: 15,755.53Balance: 172,244.473 - What is the balance, in actual $$$$, between the two options?

I am trying to figure out if I am thinking about Note ROI correctly.The note below has 290 payments left, the principal and interest payment is 470Do I simply multiple 290 by 470 to determine my total return and the subtract my initial investment?

For example make sure you have clear understanding of principal vs interest paid to a partner.

Down the road, if you wanted, you may be able to make a principal contribution (called a recast), where if you pay a lump sum like 10K the lender can reduce your monthly payment instead of keeping it the same, without refinancing. 

Brokering real estate was interpreted to being an 'agent' of the principal.  

The repayment terms for a 401k participant loan are equal monthly/quarterly payments of principal and interest (typically prime plus 1%) over a 5 year term (longer if used to acquire your principal residence).Please note that if you take a full $50,000 and then pay back the loan, you can't take another $50,000 until 12 months after the first loan was fully paid back.Per the loan offset rules that went into effect with the 2018 Tax and Job Act: if you leave your job and the loan is current at the time you leave your job but then the loan goes into default because you left your job, you will have until your tax return deadline (including any timely filed extension) to make the loan current by depositing the outstanding balance into an IRA (and thereby avoid the taxes and penalties that would otherwise apply).

Now should I dump it to the principal payment of the house to reduce amount owed  and do a cash out refi ?