Need suggestions on Live tournament structure

[authority11]

Okay, so my sister is doing a poker charity fund raiser @ her school and she just asked me what would be the best way to do the structure of an approximately 80 man tournament. She is looking for the tournament to last a maximum of approximately ~3hrs. Obviously, it is some cheap ass buy-in and these kids are just n00bs looking to have fun, so there isn't really a need for a slow blind structure for "increased playtime" or any of that.

So what I'm basically looking for is:
What is a good stack starting size?
What should be the blind increases and how many minutes per level?
How exactly does combining tables work as players bust-out? (I've never really understood how they do this) (give me a good, easy method she can do to combine tables)

Once again, I'd like to reiterate that this is pretty damn casual, so a blind structure similar to a live version of a turbo MTT would probably be called for. I just don't want her to have it run like way past midnight or whatever because I gave her a crappy structure. Thanks for the help guys.

[graydot]

Check with the home poker forum or B&M.

usually when 9 people bust out in the tournament, take the smallest table and move the people out to busted seats, the smaller ones taking priority

Just stick with regular blinds.. such as
25/25
25/50
50/100
100/200
200/400

with 15min blinds and a starting stack of 2000, should last around 2-3hours