gavra_at_work-
The tests are challenging but they can be done. If you plan on learning in Kollel for a few years make sure you still get a secular degree on the side, finding a job nowadays is very competitive and not having a secular education will hurt you.
But it is a good profession for those just leaving Kollel as staring salary is in the $60,000 (plus benefits) a year range for one exam and zero experience.
From what I hear they recently removed calculus from the first two exams, but don’t be fooled! They assume that you know calculus and it will be on later exams.
HIE-
The problem with taking too many exams before any work experience is that employers are wary that a new hire will be overqualified for a job. In other words, the new hire will be jealous that others with the same amount of exams have more responsibility and get paid more. Insurance companies spend a vast amount of resources training the new actuaries and they are concerned that the new hire will always be looking for new opportunities somewhere else.
If you are seriously interested I highly suggest you speak with an actuary while you are in college so that you can take the relevant courses.