Problem with most of these types of discussions is that they heavily dominated by Accountants and CPAs who need to just their high fee structure.   

Be familiar with the tenant laws of the state you are going to, I think WA is one of those states that favors the tenant heavily which can sometimes create headaches with managing!

When we moved to TC, we dove right in, networking on the weekends and got heavily involved in our community to successfully open our health center.

This forum heavily sells equity investments, mainly landlording. 

We also rehab/flip (moving into that pretty heavily). 

Even the EV is has experienced relatively new mass market success due to Tesla and it’s heavily subsidized the state agencies and the federal government.Robotic technology and other advances will take time.

Both are heavily loaded with fees which destroys your return. 

Here in NW Indiana, we have several investors who invest heavily in the 55k type properties, but, as was mentioned before, they have a team in place to manage their investments and they EXPECT higher vacancy/maintenance than C+ or better neighborhoods.  

It is amazing what doors will open by the conversations you have.At this stage...I would focus heavily on #1) Learn the language of Real Estate - Get on the phone!!! 

The easiest way to find land upon which container homes can be build is not by looking for any special zoning but rather a lack of zoning, like no zoning designated land, or none building restricted land, there are actually quite  few but they generally will not be found in already heavily populated areas, However, most of these lands will be within an easy and a short driving distance to the usual amenities, and services.