Yes, the noise and the pollution you get from 56 ARE VERY strong minuses. One has to go there and listen. Outside, where you may not be much of the time, and inside, with the double paned windows, where you will be most of the time. Think that you may want to stay in the house with windows/patio door open. Or in the pool. Does it have A/C?
Take into consideration (future) kids – it has a pool, I don’t know if it’s much else of the yard, you may not want that for safety reasons. Personally I’d rather have more backyard than a pool/spa.
I’ve been in the neighborhood a couple months ago and I thought that it showed some signs of distressed properties, a little patchy, some unkept front yards… Don’t remember for sure if it was Pimpernel, or other streets nearby like Isocoma or Texana…
Overall, I don’t think it’s a good deal, unless you have to have a 4 bdr in PQ NOW as cheap as possible (now) and you can live with the 56 noise and the pool. Inside the house seems pretty decent otherwise. Still, in a year or two , this house will go lower.