Thanks ocrenter for putting things quantitatively. As you said, every deal makes sense at the right price.
My estimate of the house without the power line impact is $950k including the upgrades, pools etc. Based on all the opinions in this forum, I think 800k is not price for me. Still figuring out if high 700k is the right price or not.
The concern remains resell value and time. I looked up numerous reseraches on health issues. the conclusions are either divided or slightly inclined toward “no impact”. I am sure I have more risks from many other things.