7 players
T20000 stacks
20-minute levels
lvl sb bb
L1 25 50
L2 25 75
L3 50 100
L4 75 150
L5 100 200
L6 150 300
remove T25 chips
L7 200 400
L8 300 600
L9 400 800
L10 600 1200
L11 800 1600
L12 1200 2400
L13 1600 3200
remove T100 chips
L14 2500 5000
L15 3500 7000 *** estimated EOT
L16 5000 10000
L17 7500 15000
T20K stacks = 400 big blinds, with increases ranging from 33% to 56% (43% average).
Event will typically finish no later than the end of L15 (5 hours plus breaks).
Skipping L1 and/or L2 will shorten the event by 20 (or 40) minutes, while still maintaining pretty large 267bb (or 200bb) starting stacks.