I was right: exactly 35 jugs, so far. We had a little snowfall too, but it's all melted off now, the picture is from this morning.
As for the whole packet of seeds thing, some things I think I am going to sow more of because I want to be able to cover fairly good-sized areas with certain plants, and have some to plug into holes and such.
I'm with Chelle, though, that first spring, and all subsequent springs when I've done winter sowing, was magical. Even now, it's exciting to think about all the plants I'll have in just a few months, wow!