Like Biz said I'd advise against HCG Mono. Some do fine but the majority of subjective reports I've read indicate the sense of well-being is not there as compared to T therapy. If not ready for T then I'd consider clomid.

Re shbg other than using certain other drugs to lower it, it can be hard to deal with. Consider looking into Stinging Nettle or Avenacosides and also be sure you optimize your Vit D level based on blood work. D is a hormone and will help to lower shbg and thus allow more free T.