I've found some great potential PML's by reaching out to retired investors and building genuine relationships with them.

EDUCATE YOURSELF - yes, it will take time, but will lead to a selection that better meets your expectations & avoids potentially costly surprises!

When we perform a service call for a repair item, it is often shocking how many risk management items that we note on the way in and out.

A and B will typically have more potential for appreciation and solid renters. 

It's important to have some concerns because investing is a risk and it pushes you to be diligent.

Both of this will likely require real time conversations which will be difficult from India3) Maintenance when tenants are staying - I feel less worried about this as I can have the tenant coordinate with my chosen vendor (that I already have or can potentially find from India by talking to them on phone at night time in India / morning in the US).

Like everything else they all come with their own risk.

The fourplex brings in only $100 in cash flow and has no equity yet, but there's potential for growth due to upcoming opportunities in the area. what real estate niche are you in and why 

When you stop paying the mortgage payment on multiple properties, you risk foreclosure on those properties.

Market Knowledge: These agents typically have in-depth knowledge of the local real estate market, including areas with high investment potential, upcoming developments, or changes in zoning laws that could affect property values.