Thanks for the responses guys I didn't mean for it to turn into an argument and I'm not sure how it did but anyway I think I'm going to go with one of these options, please tell me which would be a better option, thanks for all the help so far btw it's been very helpful 
Option 1:
1 tiger oscar
1 albino tiger oscar
1 convict cichlid
1 green terror
Option 2:
1 tiger oscar
1 texas cichlid
1 convict cichlid
1 green terror
Oh and just so you know I'm not planning on getting rid if these fish at any stage of their life unless something pops up and I HAVE to but no they will be kept for their life 