Funny that you mention about RE.
I have $100K in numerous accounts right now and I am thinking about the same thing as you. Just not sure I want to be a landlord and have to deal with tenants.
Maybe in your area multi family apartments are good but around here, not as easy to get 12% rate of return as you claim and no way you can get $1M for one 10 years from now. YMMV I guess.
I follow Grant Cardone. If you don't know who he is look him up. New York Times best seller. Has a sales company that generates $100m a year. Has nearly $500m in his real estate portfolio. That's $500m!
Anyway, he does a show called the Cardone Zone. Just started another one just on real estate. He only invest in multi family real estate. As Grant has stated "the more doors the better." Obviously, real estate has been very kind to Grant. And, he has stated over and over that he expects a 12% return his first year. And he has gotten it. Of course, you need to do your homework and pick the locations that are going to generate the most profit for you. You want to look at the buildings trailing T-12. What's their history? Have they had a difficult time bringing in renters?
You're going to have to deal with tenants. That's the game but I like RE because it's tried and true. As you get your RE business going you could always outsource and have someone watch your RE. Of course, they would need to be dependable and trustworthy.
I like Grant. Just be forewarned that he's not for everyone. He can be a bit brash and out there. He is putting on a show so he tries to be entertaining plus informative. If you're looking for someone serious he may not be your guy. For me, Grant brings value so I watch his show.
https://www.entrepreneur.com/article/250759