Main sale date are November 17th through December 10th (assuming it doesn't sell out in the pre-sale) and will last either 24 days after the start of the public sale or when the max cap is reached.
Exchanges that welcome dividend-tokens would house SPECTRE’s dividend-tokens and the larger exchanges in the U.S who explicitly do not welcome dividend-tokens, would list SPECTRE’s utility-token.
Which large exchanges you mean? You have some arragements already with them?