I love the way you brought the cable inside the tub from the back! Looks great!
If I could make a couple of recommendations though, you are putting the cable through a couple of sharp 90 degree turns that will degrade the cable must faster. You also have the cable in spots where weight can be pushed against the cable possibly damaging it.
What I would do, is where you enter the tub, instead of going down and then routing around the floor, I'd route the cable up, then along the roll bar. If you don't wanna go along the bar, you can follow the wiring bundle along the the wheel hump then down to the floor and route behind the plastic molding like you did. If you pull the molding up there is a bundle of wires you can zip tie your cable to. Doing so will keep it in place, off the floor, and the plastic modeling for protection.