Chances for MIT, Brown in Math/Comp Sci

@TheSATTeacher thanks for the advice, I really appreciate it - you say there are plenty of good schools I should look into. I’ve been looking at schools and whatnot on my own time, but I think something of a reality check is potentially in order before I waste too much time. The way you wrote your post, it seems my current resume is alright, just not especially exciting. With that in mind, am I setting my sights too high? Hypothetically say I’m not able to accomplish anything exceptional over the summer. Should I not bother applying to the t20 type schools at all?