I think you are going to be disappointed if you try to grow the hardy sedum and tender sedum together.
I have had survival problems bringing in some of the hardy sedum indoors and have had absolutely no success bringing sempervivums indoors.
I finally had to make myself believe just like plants that do not like or cannot live with snow and freezing temps.
There are also plants that CANNOT live happily if they DO NOT get cold and snow.
So that said if you want to grow both together I would plant them in separate pots place them in your large planter and cover with rocks so they appear planted together. Then you can easily remove your tender sedum bring them inside and leave the hardy sedum outdoors where they will be happy and flourish.
