Hi,
Still waiting for the endorsement process, but looking at the next cert to do, probably before the end of the year, or early next year.
Mostly interrested into ISSAP and CCSP at the moment, possibly CEH.
So, if I get CCSP, how many CPE points do I need per year?
According to ISC2 : 
https://www.isc2.org/maintaining-your-credential.aspx
CISSP : 120 cpe / 3 year and 40 per year.
ISSAP : No CPE point is required per year as you need to maintain the CISSP.
CCSP  : 90 cpe / 3 year, 30 per year.
Is it cumulative?
CISSP + CCSP = 210 CPE per year? Certainly not impossible, but still require some consideration and planning.
About CEH, not sure if there is any point system to maintain that cert. If not, it is a plus if it is a one time push. I considere CEH useful as people assume security experts already have that kind of knowledge.