My first reaction (aside from the fact I like 50-50 better than 40-60) is that you have a lot of tax exempt bonds in this allocation, and if you are actually in ER, you wont have the taxable income (unless this is built on a 5-10 million dollar portfolio) that puts you in tax brackets where the tax exempts would be worth it.
Are you in fact still employed, looking to get to ER with this portfolio, or is this a portfolio for someone in ER?
Coincidentally I am also 46, so I was intrigued.
If you are in ER, and are interested, I will share my portfolio allocations with you fwiw.
Let me know