also those snails might not last either--my lake malawi cichlids eat snails no matter what size, so i no longer use snails.. you could also use a few more fish..
yea here's what's in my 75g:
1m/4f yellow labs
1m/4f Snow white Socolofis
1m/4f Red zebras
1m/4f Psuedotropheus Lombardio "Kenyi"
2 bristlenose plecs
2 YoYo Botias
1 Angelicus Botia
1 Upside down catfish
You need some more fish, more ahlis or something, but again i dont know how the ahli would go with teh mbuna they can be some what aggressive, but then again so can the ahli, but i have seen it done before.