rHGH slin/igf combi for mass how long to cycle this one

[JUSTKIDDING]

Below a link from an old post off Gavin Kane,

http://www.professionalmuscle.com/forums/showthread.php?t=17988

But how long can a person run this cycle safe with igf/slin use in this cycle?
Normally a person stops using slin and igf after a week off 6.
Could you please explain this to me?
This article sounds very intresting to me.
Gavin wrote in some other replys that this schould be the best method for off season to get some extra mass, sounds great to me but i really want to know iff i can cycle like that 10 months or more safe.

Thanks