That's perfectly ok. This isn't a competition and you don't have to be right, just don't be wrong. I have learned a lot from this thread.
I would classify secured mortgage notes as income. It's not very liquid, but does provide what I assume is monthly cash flow.
Yes, part of it is monthly income, part of it is return of principal. The notes are from financing homes I sold and financed for the buyers. I’m just not sure if they’d be classified as cash, real estate or something else.
As far as my allocations, currently they are: 20% cash, 40% real estate, 30% stocks/mutual funds, and 10% notes receivable.