How Big of a Tank Is Needed?

So I would like to start a saltwater tank and I need your assistance to get me going. The first thing I did was go through and research as much as I could about compatibility and I came up with a list of fish that I want to build my tank around. I think they would all work well together in a live coral and invertebrate reef tank. I figure if I came up with the fish I want first, then I can build an environment to suit them better. So the question is, how big of a tank will I need to house the following fish? Please also let me know if you have any other thoughts or suggestions about my choices and try to keep in mind I tried to build this list around the Clownfish.

Ocellaris Clownfish (2)
Princess Anthias (1)
Royal Gramma Basslet (1)
Pajama Cardinalfish (5)
Black Axil Chromis (7)
Firefish (3)
Catalina Goby (1)
Yellow Clown Goby (1)
Neon Blue Goby (1)
Orange-Back Fairy Wrasse (1)

Thank you guys for your input, its greatly appreciated.

TL1000RSquid said:

125+ if you want any chance of the firefish and chromis not going all Highlander.. 55 if you dont mind replacing them, 75/90 if you want corals.

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Do you mean the firefish will fight the chromis, or the firefish will fight with each other and the chromis will fight with each other

I'm ok with doing one firefish, but I thought Chromis were schooling fish, are they not?