Im now thinking
1 x Pseudotropheus saulosi (male)
3 x Labidochromis caeruleus (1 male / 2 females)
3 x Cynotilapia afra (1 male / 2 females)
2 x Pseudotropheus Acei (1 male / 1 female)
6 x Demasoni.
I'm probably looking at 260l tank now.
Any hints and tips with this? any changes anyone would make?
Because of their high conspecific aggression
P.demasoni should be kept in groups of 12+ or a single specimen. You'd also have problems between the afra and dems as dems will go after anything that has similar coloration. If you like blue fish, why not take a look at
Pseudotropheus socolofi.
Labidochromis caeruleus are much happier in groups of 5 or more and fortunately multiple males generally get along as they are difficult to sex.
P.acei should also be kept in larger groups and again multiple males get along.
I apologize if I'm wrong, but I'm guessing you are new to mbuna, if so I'd highly suggest reading
this article to give you a better idea of what you are getting into.
At 260 liters (approximately 68gal) you'd could comfortably keep around 16-18 adults total, I'd aim for 4 species of 4-5 individuals each. If you decided you wanted the dems you could go with 12 demasoni and 2 other species of 4 each (you get a bit more fish with dems as they are smaller than the average mbuna).