LFS has big show tank with Frontosa and Midas with Africans, anyone try this before?

Local Fish shop here as a big 200+ gal show tank with tons of Malawi cichlids in there. Like 70 or more. Also a few Cyphotalipa Frontosa and even a Midas in there. to round it out there is some full grown plecos and clown loaches. They are freaking HUGE!!!! Shop owner says that's his show tank and doesn't sell from it and has had those fish for a long time. I can believe it. The midas and frontosa are at least 14" long with the rest being around 7" on average. I would like to do something similar with my new tank setup I'm doing. I don't have a 200+ gal, just a 60 gal. I was told if I was going to add a Frontosa or Midas I need to overstock the africans to control their aggression. Which means I won't be doing this as a breeding tank. It is just pure show.

Anyone else have any experience with this and can back up doing this? My GF really likes the bubble headed fish look for some reason so I want to get either the Frontosa, or midas, or a kamfu for the tank.

It's this one.

http://reviews.petsmart.com/4830/38...d-aquarium-ensemble-black-reviews/reviews.htm

So basically 55 gal but taller for 5 more on top. 48x13x24 is what I remember measuring it out to be roughly. Although when I calculate that into gallons it's 64 gallons. Then then again I'm not taking into account the thinkness of the glass either. so 60 is about right.