So a foot long crack in my bass has just come forward. It stems directly from the saddle of the bass which I know is a fairly common place for basses to crack. Its a 2008 Kolstein Fendt model, which up to this point has been very low maintenance as far as seams and cracks go, i.e. none up to this point. I know there are 43253 threads probably on cracks and what to do but I'm pretty stretched for time here, as I play Bottesini 2 at the Meyerhoff with the BSO in front of a full house of my county's music program students in 2 days, with a dress rehearsal tomorrow. So what do I do?

can anybody fill me in on the time period where i will be without my instrument? Costs? Is there anything I could get done while the top is off?