Replying to FKS 140 Questions

Okay so I have a few questions about FKS 140's. I searchbared and didn't really find what I was looking for. So I am about 5'6", 130lbs, and have a bsl of 305. Skier level 2-3. I usually run my DIN around 6. So my question is will the FKS 140's be too much for me? Since they have great elasticity I would probably want to set them at the lowest setting of 5, but I have heard that running bindings at the lowest setting is not a good idea. Or is this just a myth?

Thanks and +K for any help.