I think any time you are ready and you can dedicate the time you need to do it is good, so YES!.
It will get you past the recruiter to the interview.
CISSP is a management level certification (1 mile wide, 1 inch deep).
CISSP is a lot more known, higher salary ranges than most other ITSec certificates.
When I did mine I did it as part of a IT security group of certificates, I took about 6 months, but it was part time (evenings/weekends), and I did a few in that time frame.
Since curriculum overlaps a lot I figured I would take 4 certifications with little extra effort.