Can I make this combination work?

I currently have over 20+ corals in my tank with one clown, 2 damsels, one long nose hawk fish, sand sifting star, six line wrasse and tons of inverts. I wanted to pickup a free deal tomorrow from my friend. He was going to give me 3 peraculla clowns, 1 coral banded shrimp and 2 fire fish. My question is this, are they all compatible and is my tank big enough to house them. I have a 75g at the present time...

 

adding those 5 extra fish . may be pushing it a bit. i was guesstimating the size of them all, and might be too much. compatability wise, they would all be fine together. firefish have been known jumpers also. there could possibly be an aggression thing with the new clowns and the old clown also.

 

I would advise against that.. maybe one or two fish.. If you decide that you just have to have them, then just add one at a time or else your system will crash..