The property may be deteriorating as the debtor delays and as his attorney stretches out initial court hearing (in BK court) for 6 months.  

"Fixed rate debt or floating rate, what is your preference?"

So while I'm doing a new investment every few months, and keep stacking up more income, I'm not wracking up any debt or anything. 

As a generic advice:  I would recommend paying off any credit card debt, or high loans. 

I have been interview by the criminal IRS investigators 2 times now in 5 years still nothing. these things grind quite slowly and it could turn out the money went were it was suppose to and they made bad business decisions and will just roll it up to a big bankruptcy wipe everyone out and continue on with a new business we see that all the time.. there is no debtor prison that's why we have business BK laws  .. allows one to crater the company and any debt or equity and then start all over.. kills a reputation but you don't go to prison..

I can see why the new lender would want that paid off immediately.If this was a purchase, was this your debt or something that was attached to the property. 

And my current DTI is basically zero as I have no outstanding debt or living expenses right now.

If we do a sale, usually we'll pay off a bunch of debt or if our debt is getting high and we don't want to sell, we'll re-fi a property when our interest rate is about to reset anyway and pay everything off.

My goal is to be financially free, travel the world, have no debt or college loans.

I monitor the cash balance every day and sweep against interest bearing debt or sideline the funds in an higher interest bearing account.