Home Tourney structure

[Insomnia]

Im having a home tourney this weekend. Pretty small game, only 8 players, Players start with 1000 chips and blinds begin at 10-20 and go up every 10 mins.
Im wondering what is the best payout structure for this kind of game. How much to first, 2nd, and even third. Its usually a $5 buy in, so players arent afraid to gamble with thier chips. Also, should i include rebuys? (we usually play 2-3 games in 5 hrs, how much more time does a re-buy add?) also details on rebuys would be useful, like how many are allowed per player, and when the rebuy period should end. Advice taken from experience woudl be greatly appreciated!