It sounds like you are buying a place that you like, but are not inlove with. You can afford it, the question is should you. What is your reason for buying? If you have kids that need a place and schools and such, then that is a decent reason and your are not getting ripped off, so ok. I wouldnt do it, but then I dont make that kinda money either.
If you are buying because you are afraid of getting priced out again, that is a HORRIBLE reason and you should run like the wind. I keep hearing that crap now and then. Think how long it took us to get where we are. Prices have been falling for nearly 2 years now in most of SD, maybe 6 months or so in CV. Do you really think that will change in 1-2 months and well start seeing appreciation again? No way, the housing market is a momentum mover, and momentum is all down.
PS, I also live near a busy road, and it sucks when I want to go to sleep at night with my window open. For those prices, I dont want to have to dream on someone elses exaust.