I use hcg year round at 500iu a week. I don't think a break is needed although I do typically take a month or two off from them just because my vial was empty and didn't mix another lol

And I don't think your goal is necessarily unachievable, its just a big change. 10lb muscle increase while losing fat, u wont even recognize yourself in the mirror! What I meant was that although u say you are happy where u are, u then listed a big change.

As a metaphor.... if someone said "im happy with my strength now, I just want to bench another 75lbs." That would be humorous in the sense that, its a big change to be happy where u currently are.