Came into $8 million post-tax. Trying to figure it all out. Wealth manager or self-manage? What if i fuck it up?

I know this question has been asked in many forms. I have searched previous posts. Most people suggest self-managing as opposed to throwing money and at a wealth manager. I agree with that, when doing the math that multiplies about 60k x 20 years and I would be paying over a million dollars to “manage” funds that I mostly want to set and forget. Ive had meetings with JP Morgan and a couple of boutique wealth management companies. I still dont know what to do. Two out of three suggested dividend portfolios to supply the desired 220k annual income that I want from this money as it grows.

One breakdown was 70% equity (50% dividends, 20% growth stocks) and 30% fixed income. Mostly US.

Another breakdown focused on intl markets such as Western Europe, japan, Asia in addition to US with ETFs and mutual funds. And corporate bonds.

JP Morgan mentioned access to Vintage and other private investment opportunities. Are any of these worth considering vs the good old fashioned Bogleheads approach? Can I fuck this up? I do have a good accountant and a family attorney in place. Up to this point, I have self-managed 200,000 in a vanguard brokerage account spread mostly across VIGAX, VTIAX, VTSAX. Which means I know the basics and am simply on auto-buy. Any advice would be appreciated. Please be kind.