Blind Structures Page 2. Discuss Blind Structures, on ChipTalk.net the place to go for your Poker chips and gambling tips. Read it in Poker Chip Advice.
You can race for chips after the 300/600 and 2000/4000 levels OR you can race after the 500/1000 and 3000/6000 levels. However, I think you're missing the 800/1600 level in your structure, so you should race for 100 after that level.
There are some great insights above, but I am always wary of generic/rule of thumb methods of Structure creation. These do not account for variances in the size of the field, desired tournament length, etc.
One of my biggest issues with many Structures I have encountered is the irrational desire to set the levels so that coloring up occurs early and often. Generally this results in an uneven progression of the Blinds and Antes. This can be especially pronounced because once a smaller chip is off the table the Structure MUST accelerate to 'leaps' by multiples of the new smallest chip. These steps may not be mathematically correct based upon all the variables of a given tourney, and thus they can force unreasonable pressure upon players. I have done quite a bit of thinking about Structures myself. In my work instead of 'M' I use 'PtP' or Pressure to Play. If you are interested in reviewing my analysis and methodologies I have written a lengthy piece at my site: McJo's Poker - NL Hold Em Structures It's pretty long and for a casual player probably pretty tedious as well. But so far fellow gamers and tournament directors have responded with good feedback. I'd be interested in any commentaries either posted here or emailed to me. I'm All in, JA