All three work if put into the right vehicle, and used correctly. 

You would not want to manage a significant stock portfolio in the same entity/vehicle as real estate for reasons of risk exposure. 

The vehicle of your choice through real estate will be easier to determine once you have all that ironed out.

Just wondering if investing investing in vehicles like Fundrise / diversyfund, etc is worth it at all for minimum capital deposits?

Take care and stay safe. been walking in the desert  went over to death valley  so just day drives with no interaction with anyone.. we have electric vehicle so we don't even go to gas station :)  I work from home so during the week still busy with my projects 

Yet, real restate remain the main vehicle in which the Brazilian wealthy put their investment BRLs into.

I guess nothing is safe in terms of investment vehicle, I hope we are not heading towards like Italy.https://www.euromoney.com/article/b1kq42s3yscx9g/coronavirus-italys-banks-and-smes-face-crisis-if-shutdown-persists 

But I totally agree with you, if eligible - this would be a superior vehicle to SDIRA.Here is a related in-depth discussion on the subject that many readers can benefit from:https://www.biggerpockets.com/forums/51/topics/527877-self-directed-solo-401k-for-real-estate-investors-q-and-a

These vehicles are not a means for you to obtain access to tax-sheltered funds, but rather a way to deploy the tax-sheltered funds differently.

My family owns a metal building manufacturing company and we have our own in-house engineering team, so with that advantage I chose metal buildings as my real estate investment vehicle.