Fox Mill Woods and one other south Reston clod are not part of the Reston Association. There's a 4BR/4BA house near me (20191) going for your price range.
The layout is nice - two bathrooms off of the master bedroom. I can leave my seat up with impunity. There are three models of homes - this is the biggest.
There are some around here that think dox'ing people is the ultimate internet blood sport, so I'll leave it to your real estate agent to fire up redfin.com and find it in a matter of moments.
Throw a lowball at this one - it has been up for a year - maybe they'll take it :)
http://www.redfin.com/VA/Reston/11308-Stoneledge-Ct-20191/home/9352336