You can always recast the loan when you have funds to reduce the principal.

In my mind, risk involves possible loss of principal, down-side involves the hassle of work that I will need to do to to protect investment.

On principal, high costs and pain like this keep me from placing debt on my commercial assets. 

Raising capital for a syndicator and your not a principal requires a series 7 license and the ability to sell away.. 

Per Fannie:If the mortgage loan being delivered to Fannie Mae is secured by the borrower’s principal residence, there are no limitations on the number of other properties that the borrower will have financed.

If I wanted to update the principal balance and terms of the note, is that something I could just add to the existing documents as an amendment?

If the market goes down, it's a good thing because we have been saving cashflow from our portfolio and now we can buy properties at a discount with those funds.Dollar Cost Averaging is a principal that applies to the subject of Real Estate just as much as it applies to the stock market IMO.

Which I don’t plan too.However, am I able to open a brokerage, own 100% of the business and hire a principal broker for a profit share?

I'd like for my son to refinance as soon as he is able, and if he has paid the principal down some it would be advantageous when that time comes.

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).Solo 401k vs.