That thought crossed my mind too, but the tank isn't big enough for the long haul w/ a Fahaka.
I love the lep. pics, son't think the cories will last too long though...
I was going to suggest a modestly stocked heavily planted tank (some Kleiner Barr swords, Crypts - plants w/ real roots - and let 'em go wild) - then replace the light stock (tetras or whatever) w/ some Sevrums & Terrors.