I do realize using historical returns to predict future returns has some risk but you are not proposing placing a large amount into an investment all at once. 

I enjoyed reading about your big goals for the future - it's inspiring!

I’ve read quite a bit about the demographic challenges that parts of the Maritimes face so I wouldn’t expect significant price appreciation in the foreseeable future, but I’ve always focused more on the cash flow and viewed any appreciation as a bonus.

What I would like to do is find a list of people who are late on mortgage payments and plan on foreclosing their house or selling to make the payment and contact them and offer a 'subject-to' option to basically absorb their debt and rent out the place until a possible refinance in the future to buy more places.

I love hearing younger tradesmen looking into their future and making moves.

One concern I have is that if tenants never water the lawn, there may be foundation issues at some point in the future. 

In the future (not sure how long in future for your Silicon Valley place to legally be considered a rental from a 1031 perspective), you can do a 1031 exchange to buy a new rental property.

One the one hand, its nice to have the cash flow from these properties which I can reinvest taking note that we are in a record bull market due for a correction at some future point.   

Can one take a loan from the Solo401K in the current year, and use a distribution from the SoloK to pay back the loan in a future year?

He's also going to start releasing a ton of new content here in the near future.