I know a few people who went to Thomas Aquinas, high reviews from all of them. I have an MA from a similar institution and can provide some input based on that.
First, for anyone planning on working through this or any other list by yourself, don't immediately discount secondary literature. A lot of editions include an introductory essay, and there's an abundance of material on the reception of any text worth reading to be found on the internet. There are people who have devoted their entire careers to understanding one book, and it's worth it to be open to their insights, even if you ultimately reject them. At the very least they can often help you get a sense of the context of the work.
Regarding that specific curriculum, while excellent, I would say it's way too long and technical for most to reasonably work through. It also neglects a huge chunk of what I would argue is necessary material from the late renaissance and reformation period, but that's unfortunately pretty standard in the anglosphere. All of German philosophy is downstream from the reformation, not least exemplified by the fact that most of those thinkers were themselves or at least raised Lutheran, but I digress. The list is not bad at all and anyone who manages to work through it will have achieved something significant, but I would cut it down substantially and add the following in order to make it a feasible undertaking.
- illiad
- Odyssey
- Agamemnon
- Alcibiades Major (the traditional starting point for Plato)
- Symposium and/or Apology
- Republic
- Nicomachean Ethics
- Aeneid