YOU NEVER want to use hcg for extended periods of time... if you were supposed to run it longer, i would have laid it out that way... the worst thing you can do is overdo it on hcg... you will only set yourself backwards long term... run the cycle exactly as it was laid out...
hcg will eventually raise estrogen, cause suppression, you will desensitize, etc... it can cause long term damage i assure you that you dont want...