I fail to understand how using a 75mm lens, which, as you say, has more usable movement over the 65mm; could be a better option. I understand that one could shift to the left or right, to get either side of the building; but this means I can only get one side of the building on the negative.
I don’t have a 75mm lens so I cannot compare it with my 65mm lens, but as I understand it, I need to be further away from anything I am photographing with a 75mm lens over a 65mm lens to effectively get the object I am wishing to record.
I have been rather successful with my 65mm lens and consider it to be a very useful lens, if and when I happen upon a 75mm and I have the money spare, I may acquire a 75mm lens, but I doubt I would ever let my 65mm lens go, it is really terrific.
The below image is my 65mm lens using a graduated centre filter, the tripod is literally leaning into a steep sand dune, there is no way to get further away. The picture is slightly cropped on the left to remove the last trestle which was only half in the frame.