OMS-IV from Seton Hill chiming in.
There are pros and cons to PBL. It's very what I like to call "choose your own adventure"-- it's very self-directed. It's important to know that while the PBL sessions are useful, you're ultimately tested on the reading ("Final Learning Issues"). Being tested on ~700 pages of reading every 4-6 weeks requires a LOT of self-directed study, which is great for some, but not for everyone. I liked it, but I know a few people who struggled with it and thought LDP would have been a better fit. LDP is a lot of lecture, which is rough for some, but gives a lot more direction, as well as frequent smaller exams vs. infrequent big ones.
Before anyone asks, I know next to nothing about DSP.
There's not a right or wrong answer, just be honest with yourself about what would be a good fit for you.
Giving them your ACT can't hurt, but chances are good they will want your MCAT eventually.