Battery kill switch location

Do you get much flex with the rod bent at those angles? At some point in time I’ll need to relocate the battery in my Dart and keeping my options open.
No, not that I can tell. I can whack the lever with my palm like someone might do in an emergency and it actuates the switch perfectly. The rod is 1/2" diameter solid round stock. When you put a bend in something it usually makes whatever it is more rigid.

As you can see in the pic the switch itself is mounted to an L bracket which is welded to the floor. The rod is supported by a small bracket that is also welded to the floor right when it enters the trunk. It's pretty solid.