We rotate locks through our rentals, with a period of non-use for each lock.  

Doctors who deliver babies learn how in their OBGYN rotation and midwives counseling pregnant women are mostly mothers themselves.

I ask because it appears I can make this work by rotating occupancy throughout the 12m between my old primary (now refi'd to an investment property) and the new primary.

A good rule of thumb is to have at least $5 to $10K in reserves per unit to cover these situations and avoid financial strain.

Since you're so close to Loyola and not too far from Northwestern, I imagine you might have a pool of people who need temporary furnished housing while they study, do a medical rotation, or travel in the medical industry.

Brother B could be convinced to see things my way but has had some financial strains lately so it might be an uphill battle. 5)My mom is in memory care and did not do any end-of-life planning so my brothers and I are footing the cost of her care.

By BRRRRing, you can achieve your goal of acquiring four houses with minimal effort and financial strain, allowing you to shift from buying to paying them off.

We are in a constricted market cycle, low volume, strained budgets, high costs.

Just depends where it falls in my rotation.

The single biggest issue in my way currently is obtaining enough cash, whether it be my own, or through partnerships or family/friend-based lending (which I am very hesitant about to begin with as this could potentially strain relationships unnecessarily when money is involved).