It can be done with 1 8 gallon cajun cooker but 2 would be better. Are you cooking the fries and hush puppies as well? I cook for 50 or so people almost monthly. I know yours is 2x the amount I do it but I just use one 8 gallon and cook fries, hush puppies, fried pickles and jalapenos. And sometimes i just use my 4 gallon cooker alone with that amount. 4 gallon takes me about 1 hour to cook 25 pounds. 8 gallon takes me half that amount of time. Fish can be kept in aluminum pan with aluminum foil (Of coarse with paper towels under the fried food. Or if you have 2 cookers you can do the fixins in one cooker and fish in another and tell people to get em while they are hot! Just dont let it be too stressful for ya. Gathering that big is for a good time....so have fun with it! Remember to pat your fish almost dry before mealing them ( I use a large beach towel believe it or not). Less meal comes off the fish in your grease and makes a prettier coating. Rice bran Oil does not transfer taste to your food and has a very high scorching point.