I don't think you are 100% sure of what you will get or when. Normally salary OT exempt means just that. You get a set gross amount each week no matter how many hours you work.I still get straight pay on Saturday and 1.5 pay on Sunday. So it will be less than 98k.
When you say you will get straight time on Saturday do you mean that you won't be paid extra or that you will be paid the regular rate but in addition to your salary?