This is newb paranoia, nothing more.
It would be HIGHLY unlikely customs would do anything other than confiscate your shit and send you a letter for personal amounts of gear. Consider the paper work, manpower and cost. You're a small fry.
As for the local post office they would likely have done a controlled delivery to your house or busted you right after you signed and that's if it was mailed in country. You have nothing to worry about.
I know when I got my first customs letter I was paranoid as hell, but seriously do you honestly think they would bother over 50 or 100amps?
I'm not saying don't be safety conscious, but just think logically about it for a sec.
Also there is no way in hell anyone would get raided for some fucking t3 and hcg unless you were talking big time supplier amounts.
If you are absolutely concerned with safety and are a little paranoid you would be better off buying domestic and that's all I'm gonna say about that.