That's a fuckton of tetrcycline.
Ive used it for acne as well. 6 weeks. 100mg per day.
Anway, Im not a dermatologist.
But theres a lot wrong with your post. Why are you mentioning DAA and steroids/designer steroids in the same sentence??
And there is more than one mechanism by which 'test boosters' work. Some work through inhibting the aromatization of testosterone to estradiol, like you sort of alluded to. Other work by boosting LH, thus signalling the testes to produce more testosterne.
Even the OTC aromatase inhibitors do not lower 'estrogen to a dangerous level'. A pharmaceutical AI certainly can do that though, but pharm AI's can also be used quite effectively and safely to boost T. Can show proof of OTC AI's 'lowering estrogen to dangerous levels'. Also explain what you mean by that. Provide numbers perhaps, of what a dangerously low level of estrogen is.
And if you have acne problems, dont use DAA. Plenty of people have reported acne as a side effect of it.