Foxwoods - Act I

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I was playing in a 3-step satellite for the World Poker Finals held at Foxwoods. I'm in Act I where there were 10 entrants and the top 2 get a buy in to Act II. We're down to 3 players. The blinds are enormous at 300/600 with only 10,000 chips on the table.

The button has 6200 in chips and folds. I am in the SB and have 1900 left after posting. The BB has 1000 left after posting. The BB has been moving in frequently when folded to him, but has folded several times when faced to call for all of his chips, but he hasn't been in a spot as desperate as this yet.

What range do you push with?