I got a plan - should I change it?

[Bruce Reeves]

Executive summary - My duplex will be paid off next year and I want to sell. FMV approx 425k.

My goal is passive income and diversification. IRA in a 60/40 stock/bond at Vanguard but not too excited about putting sale proceeds there nor paying capital gains and depreciation recapture the year after sale.

My current thought on the duplex is owner finance to the current tenants. Four year history, excellent track record.

If they change their mind or can't come up with 10% down, then open it up to the public on an owner finance. 

I like the idea of having a good return (6-8%?) with a physical asset backing it up. 

Question - Between Social Security and the rental income, I don't need more money, but wonder if I'm overlooking some opportunities. I've always wondered if a camper van is right for me!

Again, it's has to be passive, I'm done my stent as a landlord (98% all good thanks to screening). Not really wanting to tackle 1031's, etc. 

Anyone have alternative investment advice with a risk factor similar to owner financing?