HGH is just another weapon in the arsenal. If a person is wanting to put on mass, they have to use Test, theres no other way around it.
Acneman, growth and insulin are very synergistic. Yes growth will work by itself but not nearly as well as with insulin. I don't know many people who don't use one w/o the other.
Humulin R has a 4-6 hour active window. So to answer your schedule ?, for me I do my gh shot, wait an hour, then do my slin shot. I try to time it so that my first slin shot is within the time frame I mentioned and immediately PWO. But if I am off by an hour I don't sweat it.
Stronghold, in a perfect world, I would run test and another as and hgh together then after my AS ran out continue on with the hgh as far as my dollar would stretch. That way you are anabolically growing the muscle, then using the growth to lean out and continue tuning up that newly grown muscle.