Hosting a Home Tourney, Some Questions

Ok so I'm hosting a home 24 person NL Hold'em Tournament in my basement, 4 shorthanded 6-max tables. I'm giving everyone 2500 in starting chips like the major tourney's on stars. I would like the tournament to run about 5-6 1/2 hours, and I would like there to be a lot of play at the final table. Meaning, I don't want the blinds to get so huge that the heads up match turns into an all-in crapshoot. I would like to find that sweetspot so everyone's pressured to play, but not putting such a huge chunk of their stack in on the blinds that their already pot committed. Is there any suggestions for me on how to set up the blinds, or is there any sites that u guys recommend on how to set up a tournament like this. Also, any recommendations on how to shuffle people from tables. Like should I let then play down to 3 players at each or what. Thanks in advance.