Hi Jennifer,
I remember that I ended up buying plants, so that probably means failed to start these in containers.
One thing about starting seeds in sealed containers though, I do start gradually exposing the sprouts to more air and light as soon as I see them pop up. Then I pot up a couple at a time as soon as possible; holding the rest over as backups...just in case.
Leggy seedlings would still be better than dead ones though, and if they survive transplanting to outdoors they'd surely be normal the following year.