Stick that information in your tax records so that if you are ever audited (or asked) why you did what you did, you have information in your file to defend your numbers.

Yes, that's what I was saying, the loan will be more likely to be audited after a modification, wait a couple years to mess with deeds, IMO, but even then, yes, the due on sale clause is real.

Not much different then Sched E on a 1040, except 1/3 the audit foot print in the 1065. 

Achieving (more importantly justifying) Qualified Real Estate Professional status is doable but complex and you’re going to need your own property in order to justify having annually spending that amount of hours (it is highly unlikely that any QREP audit would hold water based on you (or non W2/1099 income spouse) allocating the required hours on someone else’s passive deal).