(assuming adequate capital each year from salary)Year 1 -- Buy 150-200k single family or duplex with 75k down payment on 10-year mortgage-Rent property (may cash flow, but happy to just break even)Year 2 -- Buy 150-200k single family or duplex with 75k down payment on 10-year mortgage-Rent property (may cash flow, but happy to just break even)Years 3-10 -- (same thing each year)Year 11 - Take out another mortgage on the house from Year 1, which is now completely paid off.

It's hard to say how much rent the market will bear by doing that and knocking off a few thousand dollars just doesn't seem an adequate risk to reward ratio.

I had decent credit, around 700 and my Debt to Income ratio was more than adequate. 

Bad enough the property wouldn't have cleared adequately for the loan conditions (a conventional loan). 

If you feel like you're not able to do adequate due diligence on a property, then don't buy it.

I looked at both and while it was not great the overall condition was adequate for the price...

This is because you can never prevent someone from suing you, and even if you've adequately limited your liability, you'll need to pay for a defense.

@David Ade Ensure you are using adequate data to support those rents.

No limit on number or amount of properties so long as you have adequate reserves.

Crypto is not really an adequate source of funds at this point in time, although I would have to assume it will change in the future.