So, after about 2 weeks outside, my curling little seedlings did start to look a little better. Not great, but showed enough improvement for me to decide to give them a chance. I planted the purchased plants I was able to find, and several of my seedlings. This is what my seedlings look like today:
2018 tomato with leaf curl recovered by
Susan Albetski, on Flickr
2018 tomato with leaf curl recovered by
Susan Albetski, on Flickr
2018 tomato with leaf curl recovered by
Susan Albetski, on Flickr
2018 tomato with leaf curl recovered by
Susan Albetski, on Flickr
2018 tomato with leaf curl recovered by
Susan Albetski, on Flickr