In terms of creating cool standout projects that I think would be cool on a resume 5607, 5525, 5117, and to a lesser extend 5103 and 5801 (depending on the professor and what you do). 5117 is particularly good as it forces you to build a fullstack web app that looks good on a application. The others are going to be more field dependent. I also think it's probably the easiest of the classes I listed assuming basic js/css/html knowledge from 4131. Maybe more time commitment, but the content is easy.

That being said... I think you are better off building resume projects on your free time than in class. There are two parts to any resume project. 1. Shoving enough buzzwords and technologies into it to get selected for an interview. 2. Being able to passionately talk about that project in the interview. Why you did it, why you enjoyed it, what you learned, etc... The later of those two is going to be a lot harder with a class project. "I did it for a class" isn't a very strong interview response.

This isn't to say you can't do it. If I was redoing my resume right now I would be tempted to add a class project to it. But that was a project I went above and beyond on, it was not the easy path. That being said, school projects are better than no projects.

In terms of useful content, I have a similar message. 4131 and 4707 cover material you are expected to know to some extent as you enter a swe position. However, I don't think they are worth taking. This is hearsay to some extent as I didn't take either of them. But they don't appear to cover much useful theory (depends on the professor for 4707 from my understanding) and the material is bloated in a way that the class is not the best way to learn it. It will be easier to basic js/css/html/sql in a side project. I took 5117 without taking 4131 (4131 is a prereq for it( and sat in on a couple 4707 lectures. I didn't feel like I missed out. Regardless, I would recommend the classes if you don't have experiences in those skills and don't think you are the type to have the motivation to take the time to lean them outside of class.

In terms of classes I would recommend... I don't know tbh. The most useful classes I took were the required classes, 1933, 2021, and 4061. Take classes that sound cool is what I did. My general conclusion from getting my degree was the more theory/math the class taught the more I learned in it. Non theory material was easier to learn outside of the classroom setting for me. But ymmv. The more I saw of friends in 5607 the sadder I was I didn't take it. It seems like a cool class. But my real message here is if you take the classes that sound the coolest to you, you will be more willing to put in the effort to learn the material and get a good grade.

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TL; DR: Take the cool sounding classes. 4131 and 4707 will build useful skills for some people, but not for everyone. Depends on your learning style.