Subject: Re: I am noodling on a major change to my portfolio.
If you have enough money to fund your retirement, there is no need for a buffer of cash and fixed income. You might have to sell a little stock when it's cheap sometimes, but you'll also sell some when it's expensive. Over the long run you'll get the average valuation, and get a positive real return you wouldn't get with the cash and fixed income.

You've mentioned this number of times - you discount sequence of returns risk?