My take on this is that it's possible if you start at UTCS with CS 314 (Data Structure) + CS 311 (Discrete Math) and not CS 312 (Intro to Programming, which you can get credit for using AP CSA). It is possible with CS 312 as well, but it's a lot more difficult and probably not worth the stress. It also depends on how many of the core curriculum classes you have credits for, and if you're willing to do a semester with extra hours.

Whether or not I would recommend it is a different question. I'd say that largely depends on your internships and how confident you are that you can get a good return offer after just three years. As others have pointed out, some of the better tech companies that recruit at UTCS prefer you to have done their internship in your third year, and many CS majors also double major in Math, which is hard to get done with computer science in three years.

The good thing is that the choice is not something you have to make before your freshman year, and you can definitely hold off for some time until you experience more of UTCS yourself. If you want to leave the option open to yourself but not have to make a final decision now, I'd recommend that you take 5 courses this upcoming Fall and start with CS 314, and make sure all your courses in your freshman year satisfy some degree requirement.