I invest to achieve financial freedom and diversification. 

It's all about your objectives, risk tolerance, and diversification of your portfolio. 

The good option is if all of them have appreciated. ( It might be other ways too, but due to diversification, it could average out possibly). 

You'll still need to do the proper research and employ other strategies such as asset diversification and risk management if you want to maximize your returns.

I think diversification would be in order.. 

In addition, the above table makes a good case for diversification.

I have very little in this bucket compared to my real estate holdings but some diversification into long term companies in the stock market is probably good.  

In 1031 world this is a very common tactic called a diversification exchange - sell one property and use the proceeds as down payment on several replacements. 

Mutual Fund salesmen call it "diversification", business owners call it "new products or services".

I'm learning from other HNWI such as QP (5MM+), it seems the most HNW Investor would prefer private equity/investing at startup,diversified Income with Direct RE Placement sponsorship in Commercial syndication, followed by MF syndication.They also invest on non-RE syndication for diversification such as litigation or Merchant Cash advances.