Tounament timing question

I am helping to put together a fund raising no-limit tournament. With 5000 starting chips, and blinds going up every 15 minutes, what should the blinds start out as to complete a 150 person event in 5-6 hours? How about 200 people? And 250?
Also comment on breaks. How many...how long...etc.
Thank you.

[Hotrod0823]

try posting in Home Poker and do a search there.

I have seen a few post in the past about this very subject.

[Hotrod0823]

Check this post out:

Blinds (http://forumserver.twoplustwo.com/showflat.php?Cat=0&Number=4069444&an=0&page=0#Post 4069444)