Do some more research into this. They treat both groups of people, hypo and hyper thyroidal people with thyroid hormones (some times T3 and T4, sometimes just T4, and some times just T3)
Unless someone on here can access/refer us to studies regarding healthy people using T3; a lot of what you here will be anecdotal and subjective. When I put my hundreds of hours of research into learning about steroids and other ergogenic aids I picked up on the thyroid as being sensitive, once you shut it down it begins to atrophy. If it shrinks enough(too much) it will take a long time to start producing 'normally' as well as to regain it's lost size; some times up to a year or MORE.
On the other hand, a bodybuilding guru at my gym feels comfortable about the use of T3, as do a lot of other people on here.
I personally don't see a problem with using such a small amount T3, but I am not you, and I wouldn't use that small of an amount.
I would probably use it in larger doses for short durations (3 weeks), as well as with a diet geared towards utilizing the state your body will be in from the higher doses of T3. I would also probably use 400-500mgs of test cyp and a moderate to larger dose of masteron... Or 800mgs of EQ and masteron per week. (a no test cycle anyone?)