As long as you have enough tax-deferred space for your fixed income, I don't think it makes any difference what the ratio is. You can always keep the bonds in tax-deferred while spending from taxable equities and rebalancing in tax-advantaged. Or if not enough taxable, you can always do the 72(t) thing if early retired or simply withdraw if age 59.5.
If you don't have enough tax-deferred space for your fixed income, then you have to decide whether to have muni/tax-exempt bonds or not. It will depend on your tax bracket.
In the final analysis, money is money. It doesn't matter to me whether it comes out of my left pocket or my right pocket. Some folks might say, "Oh, the taxes will be different." Yes, but not enough to worry about.