If you still land up going via Xeni Cave, then consider looking for a flat, grassy spur to camp on along the way. The Tseke area is rather bushy and the main Tseke campsite is gonna be tight. It might take 3 tents depending on how narrow they are, but I'm not sure. Going directly up the Camel and first camping at its base certainly is more warm-up friendly. If you get to the base and find that you have enough time and your group is not tired, you could carry on all the way to the top. This will give more time on the Bell Traverse which you might need.