Are you still gaining?
I'd really consider coming off, but its your choice.
You dont compete, so IMHO, with your stats taken into account, you have no business at all conducting a 6 month cycle. You may really live to regret this.
As you have been "on" for 14 weeks, you'll need a larger dose of HCG to kickstart the leydig cells into producing endogenous testosterone again. I'd run something like 1000ius/ED for 14 days with an AI.
Do you have any testicular atrophy?