Most SA don't do well with the vast majority of big centrals from the following genus: amphilophus, parachromis, nandopsis, vieja, or ex-cichlasoma. There are always exceptions. Green and red terrors are typically the exceptions. I agree with the majority of the opinions above... chocolates won't do well with a grammode.
Keep whatever you like more... or get rid of whatever is easier to obtain in your area. Just in case you change your mind in the future.
Your green terror may work with the chocolates. He/she will likely run the tank, but if the chocolates are big enough they should be fine.