You said, "I got redzbra, frontosa, blue dolphins, yellow labs etc.. in my tank,,"
That's alot of fish, you didn't say how big the blue dolphins or labs were or how many,,,and frontosas get 10-12 inches long,,,honestly having the frontosa(s)? in with the malawis isn't a really good choice, I'm not a fan of mixing non-rift lake cichlids with rift-lake cichlids, but I have seen jewel fish in with them and done nicely.
But you did not say how long these fish have been in the tank or how long the tank has been set up.
If you are an experienced fish keeper and are keeping up on the proper maintenance regimen for these big fish and big waste producers then you will be fine adding the fish and doing more work to keep them healthy, but my gut instinct is telling me you are making a bad decision.
With no more information than what you provided I'm sticking with my answer.