Unique/Interactive/Beautiful Fish for a 55?

[nightshinobi]

Like the title says, I'm looking for medium-to-large display fish for a currently empty 55.

Local fish stores have several fish I'm interested in, such as the Green Terror or the Leopard Ctenopoma.

Would a single GT or a mated pair fit in the 55?

If not, are there any similar cichlids that would?

Or, if I go along with the Ctenopoma, what oddballs would be able to go with it?

[N0body Of The Goat]

It just so happens that my community condrum has taken a major turn... in the direction of an African oddball biotope! I'm now seriously looking at the possibility of the following for my Rio 240 once cycled:-

1/2 Leopard Bushfish (Ctenopoma)
2/3 Upside down catfish (probably Synodontis nigriventris)
1/2 African Butterfly fish (Pantodon buchholzi)
1/2 Lionhead Cichlid (Steatocranus casuarius)
1 African Fan Shrimp (Atya gabonensis)
Small school of Humphead Glassfish (Parambassis pulcinella) or Congo Tetra (Phenacogrammus interruptus) [would love to do 5 of each, but might be pushing stock levels a bit]