1500 is the starting count.

I don't know if Tournament Director follows your formula. But the bet amounts are just odd. The SB goes from 240 to 285 to 330. Who really wants to put in 2 blacks, 3 greens, and 2 reds just for the SB? Why not just go from 250 to 300 to 350. Maybe it's just me, but I don't like lots of red chips and I'm actually going from the Home Poker Tourney recommendation (1000 starting chips; blinds start at 10/20) to a variant of Tex's Tears (1500 chips; blinds start at 25/25) just so I can eliminate the red chips.