What is the best way to punctuate the following sentence:<br/><br/><i>You have sixty seconds, which is enought time to give a well-structured answer.</i><br/><br/><i>You have sixty seconds which is enough time to give a well-structured answer.</i><br/><br/>Also, is it correct that I placed a dash between well and structured?<br/><br/>Many kind thanks in advance for anyone who can help me with this.