It’s around 1% fo all home transactions and the average down payment on seller financed deals is 25%.So all those grooves out there, tell you you can get seller financing with 0% down are like lottery stores telling you that you can hit powerball.Technically yes you can, but they forget to tell you the frequency of it happening

if they ever default on their payments, and it goes to a judge, they will say that they are an owner not a tenant. 

Then filed a non-renewal in july. 

They contributed $125,000 cash as the down payment (25% of purchase price) but my wife and I are the only individuals on the mortgage loan.  

ACH and debit/credit card payments are usually a couple days.

If you buy in with a high rate, wait two years, and your property appreciates and rates come down, you get a double windfall when you refi because the payment goes way down and you have equity to pull.BUT, that is a big if in today's market.

Figure out $900k loan and interest payments per month. 

My license states that it is a non-working status.

Assuming you mean where should you choose to place your investments, overall I'll generically say you should use your non retirement assets for investing first.

If you are successful, they say it's because of all the money you make in your 'day job' and if you fail, it's because you spent all that time learning about non-financial things.