Hi Chris,
With regard to your Deep Stack game, and considering you usually have add-ons and re-buys why not have a Double or Treble chance tournament for your deep stack, for example (I presume you start at 5/10 blinds rather as 25/50, given your starting chips:
Double Chance Freezeout 3,000 Chips (1,500 + 1,500) 20 Minute Levels (100 Players = 300,000 in play = 15,000BB at finish
or
Treble Chance Freezeout 3,000 Chips (1,000 + 1,000 + 1,000) 20 Minute Levels
or
Double Chance Add-on 2,000 Chips + 1 Add-on (1,000) chips (EG £20 Entry, £10 Add-on) 20 Minute Levels (Add-on may be used as a re-buy)
or
Deepstack Freezeout 3,000 Chips, 20 Minute Levels
Players shall start with 3,000 in Tournament Chips, with all levels lasting 20 minutes. There shall be a 15 minute break after every 2 hours of play.
5/10
10/20
15/30 1hr (End of Treble Chance 1 Period)
20/40
30/60
40/80 2hrs = Break 15mins (End of Double Chance/Treble Chance 2 Period) (End of Double Chance Period (Add-on's performed during break)
60/120 a10
80/160 a15
100/200 a20 3h15m Remove 5's
150/300 a25
200/400 a50
300/600 a75 4h15m - Break 15mins Remove 25's
400/800 a100
600/1200 a100
800/1600 a200 5h30m
1000/2000 a200
1500/3000 a300
2000/4000 a500 6h30m break 15m Remove 100's
3000/6000 a500
4000/8000 a1000
6000/12000 a1000 7h30m
8000/16000 a2000 7h50m
10000/20000 a2000 8h10m
15000/30000 a3000 8h30m
For the actual 'chances' you just use a non-demonination chip(s) for example I have 25pence cash chips and use these for the 'chances' which are exchanged for more chips when required or swapped at the end of the chance periods. For the 9-10 hours max you will likely find that you will be close to this time anyway, due to break overruns and unscheduled breaks later on in the schedule, especially with 100 players, you also have the scope for 20m breaks or a buffet break if required. I made sure to put an ante in at 1/8th of the big blind, to keep your game moving smoothly, so that you are not overwhelmed by mass eliminations or rocks leaving the table due to only having blinds to pay, that will keep play in the game all the way through. 100 players is a level I have a lot of experience at with either 10,000 or 15,000 initial chips, I just needed to account for your different chip amounts.
With the double or treble chance that should for 99% of players ensure they get to play for a minimum of 2 hours, giving them better value for money, and also keeps them around longer so they will play cash/sng once eliminated.
Hope this helps and fits in with what you are already running.
Regards
Stuart