First, you gotta get your BoiiZ together. Peak Crew Capacity is 4-5 boiiz...("I don't need more than five friends" - Kevin "Diesel" Nash, member and elder statesman of "The Kliq") If you have more than 5 friends, make sure you relegate the lesser men amongst you to menial tasks and keep them out of sight and mind when Phase 2 begins.
Phase 2: Ladies
Since you have 4-5 men, get around 15 women (hot ones) for your party. Provide plenty of necessities: good music, movies, liquor, beer, weed for the smoker chicks, maybe some adderall or red bulls / mild stimulants (nothing too hard; you dont want any fucking junkies at your pad) etc. Bring way more necessities than you think you will need. Nothing kills a party faster than running out of stuff. Since there are way more women than men, the ladies will subconsciously begin to compete for the attention of you and your BoiiZ whether they want to or not (the ones that actively resist are actually much easier to finesse a bit later in the evening believe it or not). I would say even the ugly or less attractive boiiz will still get play, but you shouldn't have any of them in your Crew to begin with. Surround yourself with beauty, surround yourself with winners. Each woman knows that at the end of the night, some of them will be the odd one out even if there are up-doublings...
Phase 3: let nature take its course