Having spent the last few years in a hybrid role ranging from security practitioner, to curriculum designer, and educator, I'd say that cybersecurity has the luxury of being both a challenging and enjoyable career field.
As far as 'good career choice', I can't accurately respond to that without knowing what a good career looks like for you. That being said, if we use # of openings + starting salary as metrics... it does look like a promising career. CSOOnline predict 3.5 million unfilled jobs in cyber by 2021
(https://www.csoonline.com/article/3200024/security/cybersecu...).
I'd recommend taking a look at https://www.cyberdegrees.org to figure out what roles interest you and the experience / certifications that will help you get there. Additionally, if you are looking for materials to read/learn/practice hands-on activities in security, I'll share the (constantly growing) list I've curated: https://www.exeltek.net/accesscyber.
Feel free to reach out with any specific questions you might have, and best of luck!
Lots of info you can dig through based on location, job title, etc.
Btw, that course looks super interesting! Def something I wish I had a year ago when I was starting out.