I'm new to the whole winter sowing thing and am making my first attempt this winter. I've put out several milk jugs and 2 liter ginger ale bottles but recently found some 6.5 quart clear plastic shoebox containers for .25 ea at home depot. I planted in a few of those and am considering trying the same thing, but instead of putting the soil directly in the plastic "shoe-box", I would use 7 oz. plastic cups with drainage holes in the bottom. They are 3 inches wide and about 5" deep--8 cups would fit in one of the plastic boxes. My reasoning is that it will be easier to transplant when the time comes.
My question is: Do you think that setup would work well--i.e. would those cups be too small?