stelep7, I think you have answered your own question. If you don't have the dollar to exersise anyway, you should have a 'trade' plan in place....ie. you were always going to sell on market anyway.
Too often we see a trade going our way in a warrant/eto trade and "greed" takes over. We start counting the dollar "profit" that could be made if stock continues the trend we want!! A profit is a profit. Take it when you are happy. There are always other opportunities out there.
Beware that NCP can move against you at a pace too quick for your mouse or landline to handle.