A 100 gallon tank can be an awesome tank, if you get the right fish! Besides, why would you want to add fish that you normally would eat? :-p
If that is your intent, than I guess if it's just a holding tank to keep them extra fresh, than so be it, but a 100 gallon is not a good size for them to swim and be displayed in for their whole life.
If you want a tank that houses predictors, I suggest a Russell's Lionfish, Snowflake Eel, Spiny Box Puffer, Singapore Angelfish, and maybe a Cubicus Boxfish. All of which are cool and can add a lot of color to a tank. As far as compatibility goes, you need to check that. I would assume that they could get along, but I wouldn't put all of them fish in the tank, just maybe 4 of them. The Lionfish being the last thing you put into your tank.
Please take your time, and read all the information you can find here and other places.
Aquarium Fish: Tropical Freshwater Fish and Saltwater Fish for Home Aquariums
That website is a good start, and has some good information on how to get started, and what to get for your tank. When you take your time and research the fish you want to take care of, you can have a great fish tank that will thrive and keep your fish healthy for a LONG time. You already made the first step in asking for help! So keep it up and you will get "hooked" :-p