What size length are your pump cords? Also, where are you planning to mount your panel? I ended up fabricating a mount out of an articulating tv mount! My pump cords are 10ft plus 3" or so with the locking adapters I'm using for the pumps.
I have chugger pumps and the cord length is 5ft.... and I'll need a couple more ft to make it a comfy fit. I plan to put both pumps on a drawer under the workbench/brewbench. That way I can slide it in/out as needed and stay out of the way. It's 18/3, but I'm going to use 16/3 because Lowes has it for .63 cents a foot. I'll put the splice behind the bench, attached to the back of the bench, to keep it stable. I'm placing the controller on the wall next to the bench above my FC. Scroll up to see pics of my garage... The box will be at the lower left corner of the meat market sign.