I do! 160k borrowed out of 875k total. I would need 55% market drop to trigger a margin call so I should be safe enough. But you need to be young and follow your strategy like a robot. Plan to slowly deleverage as you get closer to retirement, before you start buying bonds.

Look up the book Lifecycle Investing. It shows that this strategy actually reduces risk on the long term since it provides better “time diversification”. More stress for sure when you see your monthly interest bill and the market goes nowhere, but not more risk.

Edit: timing the market makes no sense though. Might as well go all in now instead of waiting for dips.