Jungle Juice/ Trash Can Punch?

Hi. I am having a huge Halloween Extravaganza and I am going to try my hand at some Jungle Juice. I have calculated all of the liquor I am going to purchase and its going to be total of about a gallon of liquor. My liquors are going to be 750 ml of Raspberry Vodka, 750 ml of Malibu Rum, 750 ml of 99 Berries, 750 ml of EverClear, 750 ml of Amaretto, and 750 ml of Maui Blue Hawaiian Schnapps. I need about 15 gallons of this concoction or a small kitchen trashcan full of this. How much juice should i include? Is this enough liquor? I've never made it before so i don't know the proportions i should use. Thanks for any serious answers I get.