In your particular case it comes down to personal preference because your cycle is very mild and conservative; however there is not a negative to using HCG unless used too far along PCT. When doing more aggressive cycles then you want to use 5000units of HCG in a single injection every month to keep the testes stimulated and prevent atrophy. HCG is very anabolic and has the same effect as 1 Sust 250, so there are benefits to gains as well when incorporating HCG into your regime.