The problem with showing a build in progress here, is you will be criticized by a thousand arm chair engineers. This can make you second guess everything to the point of constant changes being made and soon when you run out of patience or money, you end up with nothing.
It's your build. You know the basics of what is needed, so just go with your plan.
A few month back, I too had a vision and when I posted my drawings or model, most criticized it and yes I made many changes to the original plan. In retrospect, all they did was stall my build. I learned. Being an engineer by profession, I stopped updating my models and went solely on my knowledge and experience. Today I can say my build is going well, and when it is complete, I will post how it was done.
I think you are headed in the right direction.
To prove what I mean, how many here know the real reason for having the column bolted down on two footings instead of just one square column with a flange bolted all around.

I think you're doing great.