Basically heres what i would do
Get a frigde and fill it up with 40s, if its a lot of people I say big fridge, if its small get one of those dorm fridges. I fill mine up with OLDE English and High Life tall Cans
If your rich, which i assume you are, get a lot of chronic, 1/2 oz, oz, and bunch of Garcia Vega, swisher sweet cigarillos or Philly blunts. Smoke all that $hit, itll be like 180-300 dollars, but if everyone puts in 10 and you have 20 people there, itll cover most of the cost
If your broke get an oz or two of schwag, its like 60 bucks and oz, or like 150 for 4, dont pay more, or your stupid, and blaze those blunts, itll make you tired near the end of the night but youll be real fvcked up
Get a couple 4L bottles of that Carlo Rossi wine, that is some good cheap stuff, like 8 bucks at Ralphs
As far as music, id play the new snoop, kurupt, DPG, DJ Quik, this dude Mausberg if you can find him, basically that west coast gangsta $hit
dont forget the hos, and some white people to punk, in this case i dont see it as a problem