[DigitalDeuce]

For some of the weaker hands at the bottom of this range, yes. As important as your BB's, you need to be aware of your M-value.

M = stack / (total cost per orbit)

1 orbit is obviously one full rotation of the button around the table. So if all you post are a SB and BB, you're paying SB + BB every orbit. When Antes come into play, you're M will drop quickly as you need to add in the cost of not only the SB and BB when they come to you, but also the ante you'll need to post every hand.

You have 2400 chips.

100/200 blinds 25 ante (9 players at your table)

(9 * 25) + 100 + 200 = 525 per orbit.

2400 / 525 = 4.6

Your M would be 4.6, which is how many orbits at the current level until you go broke. You can look for a chart that give you an indication of how critical it is to make a move at what your current M is. In this case you're not hurting but you're not in a good spot, the next blind increase and you'll need to get it all in almost for certain.

For more details on this you'll need to look in the Tourny forums or ask someone. I am not any authority on SNG/Tourny play. I do decent enough on my own but nothing stellar.