It is difficult to lose friends and family Paula. Sylvester looks much too young to leave life and he is obviously happy on his green machine.
For your crop I would leave a tad more on the left side so as not to abbreviate the fender. As I recall you are using PS. Assuming you are on the cloud plan with the Ai abilities you could ask it to remove your brother from the image. It does a pretty good job of that sort of thing from the examples I have seen. I could not do it manually and get a decent result. If you do have it and you can get it to do a good job then I would crop the image as shown in the example below. I also like the close up crop that was shown that crops out most of the tractor. Dan's result is good too but I have no idea what the family will like and they may prefer a more straight up image.
I am sure you will make an excellent choice as always.

