Balance, I noticed you still have your slots under the arm rest in the stock position. I realized they come out and changed mine around a few months ago and LOVE it. They just pop out and you can move them around.
My order from closest to the front to farthest back is: spring coin thing, cup holder, ash tray, other cup holder.
That way there's a cup holder out front that you can use without having to lift up the arm rest, and you can still get to your coins if you need them for a toll.
I found the cup holder in front of the armrest to be helpful... just me though. I'm not sure if you knew they could be rearranged... I didn't for a while. If you don't though, try out the idea.