i would go with a carpintis if your going to have it with a blood parrot, cyanos (true texas) are more aggressive and may take advantage of the less agile hybrid, though aren't the king kong ones not as deformed and can use their mouths? so maybe he would be ok, and theres plenty of room i guess you could try both and grow them out and the just keep the ones that get along better, thats usually what i do when trying to get aggressive cichlids to cohabitate
and both carpintis and cyanos are fairly outgoing, you cant go wrong with either IMO but i like the vibrant blues of the carpintis better, especially the vontehillo variant, but the cyanos are really nice as well and get to a slightly larger size