Welcome to the forum!
I agree that seeing a professional for general guidance can be of benefit while getting started. Be very careful of the term "fee-only".
It used to be advisers were paid by commission, encouraging buying and selling of stocks for a fee. Then buying mutual funds(often loaded), where they were often paid to sell, and received a small percentage annually. Now much of the public understands that paying for advice does not guarantee a better return, so they need something new. "fee-only" is born.
Fee only can mean a few things.
You want fee based that charges only an hourly rate, or a flat rate for a specific service. These are much harder to find.
Most of today's fee only advisers are paid a percentage of assets under management. 1% is very common. To me, this is the absolute WORST agreement to enter into. They have taken this phrase, "fee-only", and have marketed the piss out of it to make it sound like it is this great idea, while it is really the most lucrative idea the industry has ever come up with.
When I looked at my fathers "fee-only" account, they had a percentage of his assets in guaranteed items with a .75% yield, while charging him 1%. He was paying MORE than that money was earning. Even the good short term bonds, paying 2% at the time, means the adviser takes HALF of the earnings.
I could not disagree with you more when you say you "do not have the time". You MUST be face-punched for that(I hope you understand what that phrase means).
Fees you pay for your expert advice could add YEARS to your FIRE date. Spending 100 hours to become knowledgeable in something today can easily avoid paying an adviser tens, or even hundreds of thousands of dollars in your lifetime. In my opinion, KNOWONE can afford to not take the time to learn this stuff.
Keep coming here. Keep reading. Keep asking questions. If you absolutely insist that do it yourself is not for you, you are probably at the wrong site. DIY is exactly the advice you should get here.
Paying a set amount of money to get confirmation you are on the right track makes great sense. Just remember people here will do the same thing for free. Before paying someone, calculate your spending. That is what matters most. From that, everything else is just addition, subtraction, multiplication, and division. This is a very humbling step, and you often dislike what you find. It is from this number that all other plans must come. Any financial planner worth anything will need to know that figure anyway.
As a side note, I have not met 1 entity that is an expert in all the things you listed you do not have time for. I have met advisers that do not know shit about taxes for example. It is all overwhelming. Start small, and build your knowledge over time. We are here to help.