Yes a dilemma for sure Greg
If someone actually lived at your dark site you could get insurance and then locating it there would be a no brainer to me, with 11 night clear runs at your dark site why would you want it in your backyard?
There may be some insurer that would consider covering it even though it would be largely un-supevised - if so, it might be worth considering a relocation as it looks like your images may be suffering from light pollution gradients where it is at the moment..?
Mike