Unless you're using a moderate to high amount of androgens then stay away from t3.

It's easier to lose bf than it is to add muscle tissue. Like mentioned about, unless you're taking androgens t3 will burn fat at the same rate as muscle tissue.

You don't really have enough t3 to make this idea effective. You need to use at least 75mcg of t3 on a cut and you'd only have enough for 13 days at that dose. That's just not enough time and a waste of shutting down you thyroid.

Not sure where you heard t3 has low side effects. I have a fair amount of experience using t3 while cutting and bulking. When I get into doses of 50mcg+ there are more sides then any other hormone I've taken.

Imo you'd be better off considering albuterol or clenbuterol.