What Should I Do?

Okay, so for your Tang list, I would go with the Transcriptus over the Regani, because the Transcriptus doesn't get quite so large. The Brichardi would be fine, and if you get siblings, chances are good of keeping more than one pair together. I'd go with Altolamprologus Calvus over the Compressiceps, simply because I think the black and white varieties look better than the Comps. To fill it out I would look into Cyprichromis Leptosoma, or Paracyprichromis Nigripinnis. Both are schooling fish that would fill out the top half of the tank nicely.
As for Tropheus I've heard best results come from a species only tank of 75 gallons or larger. They are mean fish, and they need a large colony to minimize aggression, but they are gorgeous fish. The Frontosa would be pushing it as a single fish in a 55.
It looks to me like you've selected some of the nastier of the Mbuna, though I'll let someone a bit more knowledgeable comment on that.
I'm not well versed in Angelfish, but I would think a few Rams, Angels, and a school of tetras ( neons, cardinals ), would look nice.
 
ok i got some help on mfk and cut the list down even more....

heres my list so far ive cut some out

Chalinochromis brichardi "masked" 1-2
Julidochromis ornatus 1-2
Julidochromis regani Kipili 1-2
Julidochromis regani Zambia 1-2
Julidochromis transcriptus Bemba 1-2
Julidochromis transcriptus Gombi 1-2

i have a Synodontis petricola that im thinking of breeding so i know they would work

Altolamprologus compressiceps gold head


here are the Malawi cichlids

Copadichromis sp. midnight mloto Mara Point

Labeotropheus trewavasae red top/orange
Melanochromis "electric blue johnanni" aggressive
Melanochromis vermivorus Mumbo Island aggresive
Melanochromis auratus albino aggressive
Metriaclima zebra chilumba Luwino Reef
Pseudotropheus flavus
Pseudotropheus elongatus Likoma Island
Pseudotropheus zebra Red OB
 
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