Minimizing Capital Gains Tax for High-Net-Worth Individuals

David is a high-net-worth individual who has recently retired and is seeking advice on how to structure his investment portfolio to minimize taxes. He has a significant amount of capital gains in his existing portfolio and is concerned about the implications of potential tax liabilities. David is also looking into various investment vehicles, including tax-deferred accounts and taxable brokerage accounts, as well as tax-efficient investment strategies that may help in reducing his overall tax burden. As his financial advisor, you need to navigate the complexities of tax implications surrounding his investments while ensuring optimal returns.

Considering David's situation, which of the following strategies would most effectively minimize his taxable income from capital gains in the short term?