Just call and find out what they have to offer, maybe stop by and drop the money off before TJ, or maybe send a check like someone else mentioned. Im sure there are other people in the same situation. I know I hate carrying around that much cash. I just sold a car and was walking around with 4500 in 100 dollar bills, and although I suddenly had a notion for a vegas trip, I felt nervous for 2 days while having that mcuh $$ until I put it down on a new car.
I think whatever you do, you shouldnt leave the money in the car, or take it to TJ, either way I see bad things happening.

Id like to know how you work it out.