Looking good chr15_8 - one thing i would point out is that whilst the gaps inbetween the rocks will be great for Mbuna juvies - they are not big enough for adults to make caves etc. Perfect for now but you may need to rearrange slightly as they grow. 

I love how they're all under the middle rock, they look so lost in your tank. Don't worry though, it won't take long for them to settle in.