don't know about GHS SSH, that's F2 kinda stuff, for mr nice ssh, I'd say 8 is improbable. 10 weeks is more typical. (but way worth it)
If you are looking for a strain to "fuck you up" then you should look elsewhere; SSH is a sativa strain and it tends to be a more cerebral, energetic and creative high. It certainly has a body effect too but from your posts it looks like you are looking for "purple indica #1"im not obsessesed by a 8 week pheno i just heard that there was one to be found that fucked you up.