I tried to do something like that. I wasn't pleased with how I did it, it is a bit of a pain to fit it into the city. In my diagram above only 5 squares touch the fountain complex, and here it's 9. But the other buildings in my city just wouldn't fit. Still though, you have 17 road squares touching yoursPersonally I'd forego one of the Gates and use this layout for a maxed bonus with perfect compactness.
View attachment 12710
You can chain SoKs on the end (shown on the left half) or not at all (shown on the right half) and the set as a whole uses 52 squares, plus roads . You don't need to place roads above the fountains, so it's a perfect layout for adding large buildings (or GBs) at the top.