Tax planning is something that is definitely worth paying for, and I would do that on an hourly basis with a CFP that is not captive. As you get into your 50s, I think it's important to balance tax-deferred investment with after-tax investment to make sure that you don't overinvest in "retirement" savings you can't access without penalty until 73.
There is nobody on this board that can tell you what that mix is for you. For example, you may be way ahead on tax-deferred savings and looking at a gap before your 70s and want to retire earlier than that. In that case, a Roth may be more important to you.
Also, you are talking about investing in the stock market/equities only, but a good planner can advise on diversification beyond that in things like real estate/real estate trusts, etc. I can tell you from experience over the last 20 years that I've been glad to own real estate during the downturns in the market. They've given much needed balance to my portfolio.
As far as investing goes, I have an old, smaller Edward Jones IRA that I've never rolled over and I have my primary traditional IRA that I "manage" myself. The EJ IRA is up 27% this year, and the one that I manage is up 39%. Both of them are basically in index funds, but I take more risks with the one I manage with some individual equities and timed entry/exit. The EJ one is underperforming most indices this year. Also, I have a smaller account that I use for trading on margin. It's more fun than sports-gambling to me, but basically the same thing in my mind.