I actually don't find the house creepy. I mean, it had that 1990's faux Victorian mixing of patterns and florals and stripes going on all over the place, but aside from that, I agree, the basement was the only horrifying pre-murder thing about the house. But when my kids where six they were still afraid of the dark and she was pretty isolated.
I know the stories about the switching around of the bedrooms on the second floor, but the third floor master retreat seems an unnecessary luxury with such young kids. And how old was JBR when they moved up there? Four? Five at most? I get wanting space from your kids, and with teens I'd like to move to the fourth floor (alas, I don't have one) but I don't understand not wanting to be closer to your young kids, especially when the second floor could accommodate all four family members nicely and still leave plenty of guest space in the house.