Only spend 2 hours on it.  

I know you mentioned doing STR, but then you need to spend another $10k+ to get it furnished.

There are cases of local governments delaying payment due to budget constraints.

It's putting out lots of fires, managing finances like a hawk, keeping projects on time, in line and on budget, marketing the property & getting it through closing, and *then* doing it all over again - and that's if you're not doing any of the work yourself. 

Many of the level 1 trauma centers will likely have a need for travel nurses, but the need for travel healthcare professionals in hospitals changes based on many factors: temporary shortage of staff in a particular unit, budget, patient census, conversion to per diem instead of travel contracts, etc.

I wouldn't spend one minute worrying about that violence. 

Also, what if you spend thousands of dollars on a brand-new DADU, only to have the seller reaqcuire the house?

Basically, flip partnerships suck unless you spend a long time being clear about the roles and payouts, etc.

I have 30+ units and on a regular month usually only spend about 5 hours total on management things, most of which involves collecting rents and bookkeeping.

This would need to be structured that if your rent is at or below your mortgage payment, the portion of the mortgage payment going towards principal is more than all other expenses (and hopefully more than budgeted capex).