Help me "clean up" my tank

Hi, I have a 55 gallon cichlid tank,,with kinda of a hodge podge mixture of africans,,(and 1 american). I want to stick with africans,,mbuna to be exact. Here's a list, what should I get rid of and what else should I get to mix with the ones I keep.

WHAT I WANT TO KEEP:
(common names)
snow white
red zebra
ice blue zebra

WHAT I MAY GET RID OF:
venustus
blue hap (may keep him)
ob peacock
yellow peacock
JD
1 hybrid

I'd like to hear some stocking ideas which could mix with some of the fish I already have..thanks.

Yes, I have lots of rockwork,,I'd like to get it a little more higher, but ideally my tank is set up pretty well for Africans,,sand bottom and all. I just want to get some fish that are a little along more of the same line.
Not sure though if I want to go with the male to female ratio, was leaning more towards the male species tank.

Any more suggestions..?...I would like just to hear some stocking suggestions...this is probably the place where I may order from.
http://www.quebec-cichlides.com/index-eng.html
they are only about a 10 hour bus ride and that is how he delivers..

bump