How long , how much rockwork, caves and so on. I think the three leleupi will take up a lot of space, but you might get som juliis in. I'd give fairy cichlids a miss as I've always found them vicious little so and so's, and I hear eretmodus, goby cichlids can be too, but I've never kept them, or calvus, another option.
It's breaking the lake biotope, but if you can get some true bred specimens, a trio of dwarf pea****s? Cyprichromis might be another option if the tank is long rather than high