Hey @Charles Ho welcome to BP, we're neighbors! I live in EDH.
I think @Eric Z. hit the nail on the head. Leverage is the key to winning in Real Estate.
If your goal is really financial independence, what does that mean to you?
Diversification in the stock market is not a road map to financial independence. It's good if you want to stay passive and let other people help you double your money every 7-10 years.
Ask yourself the questions, can we be financially independent if we double our stock over the next 7 years? For some maybe... 'But it will be a safe way to keep money' (says the wife).
Why does it need to be immediately liquid? Real estate is liquid, you can always sell.
I also don't think you'll become financially independent in 7 years buying single family rentals. There needs to be a massive action plan!
You can take a more passive approach to REI and it could take 10-20 years to build a great real estate portfolio to retire on.
Read: The Millionaire Real Estate Investor - and make your wife read it too!
Or become aggressive, build a Real Estate Business that produces massive income and runs on it's own. <- My plan, but far from it :(