Hi merlin,
If you have space at the short end on the on the left, you may want to consider putting the control panel there.
It's a nicer view of the layout and you can see all the switches.
I also thought that an oval access hatch would allow you a wider hatch for shoulder clearance and fit in the space. It's a 27"l x 18"w oval. It's nice if you can stand up in the access hole.