Hello elbee! Welcome to ATP
If your conditions outdoors are good, you can bring them out carefully in part sun/shade. If you are keeping them indoors for now, bring them near a bright light window. South/west/east facing window is okay. Just not too close to the window, if it is too cold in your area.
I do not see a reason as yet to split them up. Africa being a big continent, has different climates. Some are dry, some are sub tropical. But pretty much the types you have will like to be on the dry side. Water once and leave them alone. During the warmer months, water very well root/soil zone till water exits the container and allow to dry. Does that lovely glazed container have a drain hole? Succulents need good drainage. They hate their roots to soak in water.
Cacti at this time of the year, most of them are in hiatus/dormant. They will return active growth in Spring, so if you do get one, keep them dry for now.
