I've been the best man and I know exactly what you're feeling dude.
Now, it's important to include the following in your plan...
Drinking
Partying (Of course, what would a party be without any drinking?)
Looking back at the good ole times
And most importantly...strippers and lots of em. Don't just stay at one place, go place to place.
I would recommend you renting a van and pile the guys back so that way, only one of you guys are the DD. Just make sure you don't drink too much *Remembering passing out in the back and waking up with a horrible smell* You'll have to pay for everything too