Chances on Brandeis and/or Holy Cross?

I go to a public high school in the Northeast. I’m pretty interested in Brandeis, Holy Cross, and other similar schools. I was wondering if anyone could tell me if I even have a chance. My GPA as of the end of my junior year is a 4.1 out of 5. I got a 1270 on my SAT. I’m studying for and planning to take the ACT in late October. I also might retake the SAT. By the time I graduate I will have only taken 5 AP classes, but my schedule is pretty tough for this year. I’m in a few clubs including NHS, Student council, yearbook, and I’m writing for the school newspaper this year. I did run for president of NHS but didn’t get it so I don’t have many leadership positions. However, I have done a lot of community service if that helps. This year is looking good and I have all A’s so far. I’m expecting my GPA to rise to at least a 4.2 by December. I’m pretty concerned about my SAT score so I’m hoping to do well on the ACT. I’ll also be taking SAT Subject tests in math and physics. So let me know what you think.

Also I’m considering applying early decision to somewhere, but I’m not sure where yet. I’m looking for just any tips on how to build a good application. I think I’ll end up being in the top 10% of my class. I have one recommendation letter from my AP Physics teacher that I have for two years and another from my English teacher that I’ve also had for two years. Both teachers know me very well and my physics teacher has actually won awards for teaching before (not sure if that helps me at all). I could also use suggestions on other schools (safety, match, and reach) that I should be looking into. Thanks.

Scores are a little low for both schools, but you can apply test optional to both. But you should wait and see what you get on the October ACT. Holy Cross encourages interviews so make sure you schedule one. They also like community service which you have.
As for safety/match, look at Providence, St Michael’s, UVM

If you really like the school, apply. Also make an appointment to visit, have an interview, and go to classes. Demonstrate your interest. Also look for a major that’s possibly not as popular, but that the college wants to retain–that can sometimes offer an edge at admission.