tankmates for 80 gallon

I have bought a 80 gallon tank with dimension 4ft × 1.5ft × 1.5 ft. I have a 1 female jaguar, 1 texas, 1 oscar, 1 green terror. I want to know wether it is safe to keep them in a 8p gallon tank, i also want to add red devil cichlid or arowana or giant red tail gourami. Plz plz help and give a...