Yeah, I’d have to agree with @IliketoFence, a 26 ACT is going to be hard to look past. If you write good enough essays and have a compelling story, your service may be able to put you in position, but without those, it will be more difficult than average.
One thing to note is about your course rigor. As far as ND tells us, they’ll look at everybody’s school to determine how hard of a schedule that they took given the options/requirements of said school. So if you did everything you could to take a rigorous schedule, ND will see that.
Best of luck!