I second
@wanderlust7 The tracker shows exactly 90 days but Chase usually has unofficial leeway. Reps won't know or say, but historical semi-officially it's 115 days and still good DPs of around 100 ish days. If it's only $100 or so, what does it hurt to try? I'd spend asap and hope for the best.
But to your question, the Biz cards are independent. You an hold all the biz cards at a time, but only 1 personal (without the MDD loophole). So if the spend doesn't work, look at the other biz card or you can indeed close the one and apply again.