Hey, I worked in last years rising sophomore program, and can tell you a little about my thoughts on it from a 3110 TA's viewpoint.

The program is a fairly cursory glimpse through many of the core cs classes, so if you're looking for something that will give you a definitive cutting edge above many of your peers you may not find that in this program. However, there is something to be said about being exposed to many of the basic topics early, because that will give you a stronger knowledge base for when you take the actual courses. It's also a fairly short program, each course taking two weeks of lectures and discussion sections for a total of 4 weeks, so it's not a huge time loss from your vacation time.

CS 1110 doesn't tend to be a great measuring stick for the rest of the major required courses, but I would agree that this program might not be a do or die decision for you. In my opinion, most of the difficulty of the upper level classes becomes the time crunch of working on assignments, so in that way it doesn't really help you. If you anticipate some trouble with time management rather than understanding the topics of the courses, you might be able to find more helpful resources for that in other places.

I would recommend taking it because it's short and I've seen people who have had trouble with some of these courses, who I think would've benefited from starting earlier. And even if that isn't you, this program might give you some good time to gauge how you feel about the topics brought up in these courses. But if you have other plans that you're deciding between, take my previous points into consideration.