We made a mix in college that tasted great and would knock you on your a$$.
Sprite -3 two-liters
Malibu Rum 750ml
Kool aid mix- make a couple of gallons of fruit punch and some green colored flavor for Christmas or just add food coloring to another flavor.
We just mixed it all together in a large cooler with ice.
Sorry, I think this is the right amount of each and you may need to double or triple it for more people.