Short answer is yes.
Longer, but still short, answer is to be sure to preserve testicular function while on long term TRT using HCG. You may want to have kids some day. If you don't cycle on and off without proper PCT, there is risk of losing fertility. Also, there are numerous other good reasons besides testicular size and fertility to maintain an LH signal with HCG.
Soap Box answer: You need to decide why you are doing this. If you don't have any low T symptoms, then there is no medical reason for TRT. However, if muscle gain is important, then you have your answer (no judgement intended).