Thank you everyone for your prompt reply. It looks like I'll just have to be patient concerning the arrival of lower fares. I don't have any real miles to speak of (500 with US Air), but I will certainly pick some up with whichever airline I eventually fly. Hopefully the non-stops will come down substantially, if not I will certainly keep my eye out for deals (especially in the $287 range!).
As for the weather, we prefer the cold to heat, provided it doesn't cause crippling delays as it does in the US, and anything within a couple degrees of 50F (10C) will be wonderful. Our only regret is that we can't go during wine season!
Thanks again,
Eric