Sorry for the late response still putting x-mas stuff together for my little girl hehehe busy daddy i am..
Yep that stock list should be ok for the firemouths and cutteri as long as you get rid of the cardinals, kuhli's and cory's the plecos would be fine the others would be a snack..
Here is a info link
http://www.cichlid-forum.com/profiles/species.php?id=1341 i use to breed these fish and i had tons of photos but were lost due to a hard drive crash on my old computer i wish i still had those photos..
Here are a few photos of the cutteri
http://www.aquaticcommunity.com/fishpictures/showphoto.php?photo=9774&si=parrot which in fact let me tell you these photos dont do any justice in my experience they are really beautiful fish 4 firemouths and 4 cutteri would be good avoid the salvini as for it is really aggressive and probably be too much for them but who knows it may work..
Have fun deciding my friend..