It sounds like what you are doing works, so why not repeat it? 

I'd also learn a lot about maintenance and managing tenants.Then, with my hands-on experience, I could decide if I wanted to repeat the process or target 5+ units - which my experience would help with lenders.Good luck with whatever you decide to do!

You can rinse & repeat after 1yr.

And every summer I’m looking to repeat this pattern of full time summer work, followed by part time while I’m in school.

The storms can be intense and frequent in the summer. 

It's compounding effect of multiple strategies, multiple actions, repeated with regularity and persistence.It is about building a pipeline BUT every foot of pipe laid requires regular maintenance or else it disintegrates into nothing and is gone.

It's actually a living document so I frequently update it.

If I was local to it and could verify things frequently with my own eyes I'd consider an arrangement like that. 

Good day, as a contractor who gets approached quite frequently to participate in these type of loans by my own clients, please take into consideration that you need to pay taxes on your return.

While it's difficult to accurately predict when a recession will show up, we can certainly count on history to repeat itself.