You guys can give any kind of advice you like. If the situation goes south he has you to blame, not me. The opportunity for it to go south is there, you think it depends on fish personality, well fish personality is directly tied into species and their health. If the OP wants to know if it can work, he can listen to you. If he wants to know if it can go wrong he can heed the rest of us. Gambling is fun until you lose.
Further more, I don't see how a person who's only kept juveniles for a few weeks has any business giving advice. But it's a free world, free forum, so all three of us are aloud to say whatever we want in an opinion based thread, un-bunch yourselves and deal with it.
Referring to fish behavior/ requirements etc at juvenile sizes is a form of denial, you should learn to accept them for what they truly are from the get go if you want to be deemed a responsible fish keeper.
Stating that an angelfish won't eat a small fish unless it's starved is ludicrous. The healthiest fish are always on a mission to eat unless they're stressed to the point of floating in one spot all day.
Cories; where did they come into this convo? Are they character witnesses are something? My angelfish don't care what niche their food occupies, if it fits they will gladly stalk it until dead. Never have I seen an angelfish that can fit a full grown cory in their mouth, so I don't understand what worth this point has either.