I am going to throw my hat in for 450 this month. While not huge, 275 (IIRC) was my goal last month and I will hit 370 by the end of day today, so lets go for 450!
Plus I have a organized 50 miler for Sunday, first organized ride of the season, with some folks from church. Although I might talk them into the 70 miler instead.....we will see.