Thinking about 5D Mark II

So, over the past few months I've been considering going full frame for a variety of reasons.

I currently own a Canon 7D with a few nice lenses: 50mm f/1.8, 16-35mm f/2.8 L, 70-200mm f/2.8 and 28-135mm f/3.5-5.6. I've been pretty damn happy with the 7D, image quality is great and videos turn out really nicely.

But one effect I can't get (either I can't do it, or the camera isn't capable) is something like this:

Screen_20shot_202012-06-18_20at_2010

This was taken with a 50mm and 5D Mark II, and because of the crop sensor it's difficult to get a nice wide view and still take full advantage of that nice f-stop.

Am I crazy for saving up to buy a 5D Mark II in the next two months?