This means you are doing it strictly for the cash flow.If it were me, I would go the ADU route, Rents could be comparable to the condo without the HOA dues (yes higher Cap-Ex but those are long term expenses), and with everything on one property, things are just easier to manage (one mortgage, one property tax bill, one insurance, etc.). 

They are strictly for investment.

No, no, no.....run....Or at least make sure their parents are 100% liable for rents and damages....set down strict, hard and firm rules and be prepared to enforce them.

Pretty much anyone and their mother fled to Mexico to escape strict measures during the pandemic and the overall majority of them came back unscathed, loving their experience and are returning regularly.

Over the years IN TEXAS I have found more success when I am working with PM's who are realtors than PM's who are strictly PM's. 

Farmers might lease it but it'd have to be strictly farm land to appeal to the biggest farm audience.

Lenders are more strict. 

Your state law requirement of 21 days for the security deposit disposition is strict. 

A traditional sole ownership property will cost you approximately 5% of the total value of the property to sell based on fees we are all used to paying (and you are paying all of that out of your equity, regardless of how much debt is on the property, and without a return of capital clause).Again, simplify your analysis to a strict understanding of the property level analysis inside the portfolio - something you've likely been doing on your investments to date.

Be cautious of cities that aren't proactive in job attraction; too much growth can lead to strict building regulations, affecting housing value.Other Factors- Favor cities with a crime index that has consistently decreased over a decade.- For appreciation, I look for a minimum of 2.5% YoY growth in median house values over the past 20 years but I don't use this explicitly in calculations.