Yellow Labs should be tough enough to handle it, and the Zebra's too (just choose one type of Zebra though). By electric blue do you mean Johanni? If so it's a good choice also. Aulonocara do not do well in these types of setups though, so I'd forget about them.
i'm starting to set the tank up am getting bits of rock and sticking them together with aquariam sealent and then sticking it to the back of the tank for shelter.What do you think is best??
Sounds fine, as long as there's lots of caves and hiding spots. I've always just piled the rocks up - gluing them is much to permanent and makes cleaning a real hassle.