I don't think offering the same amount for intensive 1-to-1 coaching as the standard fee for software-assisted filing is much of a deal.
Two approaches you could take:
Get your taxes prepared this year, but also buy a software of your choice and shadow their work. If you can replicate their work, then you know what to do, and have a template for next year. If you need to ask questions, the software will let you be specific.
The tax mills run classes for their new retail employees. They charge for this, because it's so common to either burn out, or want to just learn for yourself. So, for $1,000 or so, you can take an H&R Block, or any number of others, seasonal online or in-person course. Of course, this is no substitute for a CPA, but you can get a feel for what's possible.
And yeah, investments are not a tax problem. Owning a business makes taxes complicated.