If you don’t know which area of ID you want to work in then I would suggest working for a medium to larger size consultancy so that you are exposed to different projects, different companies, and most important different senior designers so you can keep learning and growing as a designer. After a few years try a corporate job and see if you like it.
At the end you will be designing and working with the same people 40+ hours a week so it will be the same projects, same work load, same process, same politics, etc. I would suggest getting a range of experiences/jobs the first 5 years of your career and build your relationships with clients and other designers.
Your wants and needs will change as you get older. All nighters will no longer be exciting, constant change will not be as appealing, salary may become a bigger issue, location and settling down will become a big factor.
You have 40+ years to design so don’t rush into it thinking you have a set path. Good luck.