[Duece Three]

I've been asked to run a tourny for a friend.

Expecting 50 people, wants it to last 5-6 hours.
Total Chips that I have:
300 ($5)
500 ($25)
400 ($100)
100 ($500)

I'm thinking of the following breakdown:
(He want's everyone to start with $2000)
8 x $25
8 x $100
2 x $500

Blinds (30 minutes)

Round/SB/BB/Ante
1/$25/$50
2/$50/$100
3/$75/$150
4/$100/$200
5/$200/$400/$25
6/$300/$600/$50
7/$400/$800/$75
8/$500/$1,000/$100
9/$750/$1,500/$150
10/$1,000/$2,000/$200
11/$1,500/$3,000/$300
12/$2,000/$4,000/$400

Problems?
-Only starting with 40BB
-No chips for color ups.
-I'm not convinced that the blinds are going up fast enough for the tourny to end "on time", but I also don't want it to turn into a crap shoot. (I think I'm close?)
-???

*First time for a tourny this big for me to run
*First time I've tried introducing antes (how to they look?)

I've been to the Home Poker Tournament website many times, and have put together a couple of "successful" tournaments with 20 or less people...

I know that I see what seems to amount to several of these home tourny questions asked each day...I hate to repost, but I think this might be a lttle different?

Anyway, thanks in advance for any responses/suggestions.

-Jeremy