what fish should i get next

Question
QUESTION: i have 2 tiger barbs ,4 black skirt tetras,one 11 inch pleco,2 silverangels, and 2 gourmies .any suggestions on any other fish to put in i know i want some more angels i have a 90 gallon tank please help

ANSWER: I would suggest only keeping the 2 angels, as angels can get territorial.  I would add 4 more tiger  barbs (they like groups of 6 or more) and 2 more black skirt tetras (they like 6 too).  You could also look into getting some dwarf south american cichlids like german rams and bolivian rams and checkerboard cichlids.  Another possibility is another school of tetras.

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QUESTION: i just had got 2 convicts is this alright

Answer
this is not a good idea.  2 convicts could form a pair, in which case they will get aggressive and could kill every other fish in your aquarium.  They are not very  compatable with angelfish as they are also cichlids and territorial.  By putting convicts in a community tank you are just asking for trouble.