I would recommend that you take the tire in and get it replaced. Being on two wheels and not 4, taken all precautions to prevent a failure at speed can not be over emphasized. I would plug it if you have to, but only long enough to get it changed out properly.
Would stay away from the Slime by all means for not only are you risking it not working or failing at the most inappropraite time, a question to me would be what will that stuff do the nice billet rims both in the short term or worse show unknown effects later down the line??
Beside, if you were going to get a new tire, now would be the best time!!