instead of stocking up on rockdwellers, you might think about adding Paracyprichromis nigripinnis; aka Blue Neon.
IMO daffodils are too agressive for that tank; all "brichardi" like cichlids spawn like rabbits, let siblings stay near to form family-groups with the elders and as a result form HUGE territories!
definitely a fish for a huge tank (75G, 100G, bigger) with sturdy tankmates (Tropheus, Lepidiolamprologus, Ctenochromis, Cyprichromis sp Jumbo etc)
leleupi's too are quite feisty with a fairly large territory, but it might work. Same for Neolamprologus cylindricus wich behaves exactly like that, and who should NOT be combined with leleupi.
Definitely add a few petricola's; as a 4-6 group they do much better and show up.
Easy fish to combine with Altolamprologus and petricola's inlude all kinds of shellies, like ocellatus, multifasciatus or brevis (those 3 are the best to start with)
again: put only 1 -ONE- species of shellie in that tank!
others are the smaller Juli's; Julidochromis dickfeldi, J ornatus or J transcriptus (but NOT J transcripus Gombe!). again; only a single Juli species.
Telmatochromis species are greatly overlooked and much easier and more peaceful than Juli's; T vittatus, T brichardi (most sold as "bifrenatus") and the new Zambian Telmatochromis are very nice. 1 species per tank.....
Juli's and Telmatochromis often quarrel, so best choose, not combine.
Aulonocranus is active and needs room to swim; iot's sandnest is family-pizza sized......how roomy is your tank? floordimensions?
Your tank can easily hold your calvus, 3-5 petricola's, a pair of Juli's or Telmato's and 6-8 Blue Neons (of wich 2-3 males, rest females). This way you have very different looking fish, and colors too (Blue Neons!)
best news: this peaceful colorful fish is an open water dweller and does NOT use the floor!
"And he piled upon the whale's white hump the sum of all the rage and hate felt by his whole race. If his chest had been a cannon, he would have shot his heart upon it"
Jean-Luc Picard