Brother we know nothing about you other than your dream stack, need a few things from you.
Age ?
Cycle experience ?
Detailed lay out of your plan and stack ?
Not knowing enough about you we cant fully understand or help you, personally id never just GH going into a competition, GH is strictly off season for me, GH can make you bloat or retain water make u look puffy etc, GH is a gamble going into a contest or contest prep.
Not sure if the plan was offseason or during contest prep, definitely alot of knowledge people here that can help you out, just need more details man.
I like utilizing the 5 on 2 off method for GH helps stretch it out a bit further as well more cost efficient imo.