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How should we organize our finances to effectively plan and prepare for an retirement in next 10 years?
The biggest issue is your lack of diversification.  Your real estate investments have performed quite well so far, but you have also likely enjoyed a period of unprecedented growth that is not sustainable. In the long term, stocks have always outperformed real estate investments, which tend to track more closely to the inflation rate. You need more balance for when when the real estate market cools off. You don't mention tax-deferred retirement savings accounts. You should prioritize your attention to these to keep your income tax low. Consider selling one of your investment properties if you can't adequately fund the 401k.