I would choose rum. A flavored rum is not a neccessity, however it can be good for certain recipes. Most types of Rum will go into this well, however, I would not advise using Bacardi. That's better served with carbonated soft drinks. Any alcohol specific questions may also be asked.

I would also go with some type of fruit juices as a mixer. If you'd like recipes, feel free to Google them or ask me for recommendations. I was a Tiki Bartender once upon a time, so I know the fruity tropical drinks pretty damn well (I don't drink them however).

i want to be the drunk kid wearing a hawaiian shirt drinking out of a coconut asap

budget is not a problem, im just getting sick of drinking beers every weekend. need something new, and I cannot currently locate the gigantic gatorade cooler that was stolen from the football team I used to make jungle juice in.

im wasted just reading that list.

and for good measure, how about something more simple then that, less ingredients