Feel free to correct me if you think I am wrong or embellish my comments if you wish...
The manual that came with my grow light stand recommended lowering the lights to about six inches above the plants once they had sprouted. I think that is way to low as I fried the first pot I put under the lights. I have now raised the lights to around 16 inches or better. If I get leggy plants then I guess I will just have to deal with that.
The last frost date in Chicago is around May 15th. I worked backward from that date to arrive at my planting date. None of these plants are going to be ready to take outside next week. I could have started planting at least one whole month earlier perhaps even more.
Even though we bought the multi seed trays we actually wound up using plastic salad and cookie containers. The salad containers are about 4 inches deep. I am not looking forward to transplanting these tiny sprouts into plastic cups. I assume I can not just leave these plants in the original containers that we filled with Jiffy seed starting mix. I would guess that once they are around six inches tall we should try transplanting. I am thinking that next year I will fill the first two inches of the container with regular potting soil and the next two inches with the Jiffy seed starting mix. That way I could just leave them in the original container until time to plant outside. Any problems with this approach...
I bought a couple of the tools to use to plant the seeds. None of these seemed to work very well. I think I will try to make up one that I think will work better.