I started my sunflowers in a small 4" plastic pot 4
seeds to each pot. They did fine and all germinated.
Morning glories need to be soaked for 24 hours before they are planted to speed up the germination process. I would also suggest not planting any floaters since they have a tendency not to germinate for me. It is also suggested that you nick the outer shell of the morning glory to help it start. I don't find this necessary but it never hurts.
Definitely use humidity trays if you are using peat pots. I find that they dry out very quickly. A humidity tray is just a waterproof tray with some rocks or gravel in it that you can put the
plants on so that they are not sitting in water but right above it. So that as the water evaporates the air around the
plants gets very humid.
By The Way, welcome to the forum. I always enjoy seeing other virginians arrive. Where is Berryville?