I probably won't keep the license indefinitely, though.I just bought my first investment property at end-October via my new self-directed IRA.

A physician must determine that his or her condition can be expected to result in death or to be of long-continued and indefinite duration.Included in income because the designated beneficiary received:A tax-free scholarship or fellowship (see Tax-Free Scholarships and Fellowships in chapter 1, Scholarships, Fellowships, Grants, and Tuition Reductions),Veterans' educational assistance (see Veterans' Benefits in chapter 1, Scholarships, Fellowships, Grants, and Tuition Reductions),Employer-provided educational assistance (see chapter 11, Employer-Provided Educational Assistance ), orAny other nontaxable (tax-free) payments (other than gifts or inheritances) received as educational assistance.Made on account of the attendance of the designated beneficiary at a U.S. military academy (such as the USNA at Annapolis).

Not an indefinite delay, either.

I've used 1031 exchanges to defer taxes indefinitely.

Right now it looks like you could reduce rents by $75/month/unit and hold the property indefinitely.

If you can afford to make both of those payments indefinitely on your present income and in your present situation - then I would say you have few worries in proceeding.  

Liquidation is always another option, but I plan on holding my properties indefinitely! 

This was done to help prevent a neighbor from losing his house due to foreclosure, and allowing some time for things to improve, but not an agreement I wanted to be in indefinitely, hence the 5 year balloon.

Thanks @David Barlow for chiming in! Definitely

It's great to have folks with experience jumping in. Definitely