You are doing good. Was great that you mixed the two planting medium together before planting. Morning sun should be okay, and you should keep the leaves that are on the stalks. The ones above soil line, it will help with photosynthesis. But do remove the bloom buds. I know, it hard to do that, but you won't regret it come next years growing season. Once they have started to actively grow new leaves, check to see if roots have started. Once you have nice root system you can plant them into the ground. But don't let them dry out while they are getting established. Let the soil almost dry out, then water thoughly.
The seedling should be kept in filtered light or partial shade until they are growing well. It will help to keep them covered with clear lid or plastic wrap until they germinate. Once they germinate you can remove the cover and keep them misted so they don't dry out. But don't keep them soggy.
Looking forward to see new growth on your sedum cutting and those soon to be seedlings.
