Well, at your age, the shutdown caused by aas can be a bit harder than a younger person. thrn adding to it is the compounds you've ran and the duration. House is right: you're gonna need an aggressive pct. An hcg blast leading up to it would prolly do you some good. Sort of revive the nuts. I'd go a step further and hit some triptolein but the real shit. Granted you want to reset..
If you ever want to have natty levels again, I wouldn't push it much further for this run and would keep it at 16 weeks on future runs. If you can't make the gains you want in 16 weeks, then you're flat out just being lazy.