Your allowed to sell a open edition prints - if it’s public space and you’re allowed a your camera yet alone a cell phone. You sell the image by itself and don’t tie it in with any other advertising. Specific example; do not run any form of ads with that image even to your own brand if other logos are present.
No Auto ISO - stick to 800 - 12500 - 3200 and adjust your shutter. / next
I got about 800 K on my old 5D Mark IV, it probably would have kept going until it got stolen.
Take the 150 and don’t look baxk