Rotor Suggestions (I'm sure I am overthinking this)

This is what led me to my overthinking! I'm sure these rotors have been turned before is there a minimum thickness they need to be? That's what I'm currently researching lol. I do know the calipers are gone there's no getting around that there so rusty and gross I'm just not comfortable with them.
I do not know your skill set but they are pretty easy to rebuild if the inside of the piston where the fluid goes is not pitted. Or
@mobileparts prob has nos ones.