Just do test right now. One variable at a time makes it easier to get close to optimal. Don’t do the AI unless you need it (symptoms, not blood work). At 100 mg/wk your chances of needing an AI are close to 0.
I’ve never heard of it, but if it is Test E, I have used that. It sounds to me like a company found a way to make a lot more money off of a cheap drug that can’t be patented by making a novel administration device (which is patentable). If this stuff costs you a lot of money, just ask to switch to Test E in a vial. Maybe insurance covers it all, if so, it doesn’t matter.
This is normal. It is a life long decision. To me it sounds like you need it. I think the reward will be better than the commitment of pinning, blood work, and appointments.
This is less common than what people think. Mine are maybe 15% smaller. This will be individualistic, but I think most get a small amount of atrophy. Most women I don’t think would be able to tell. If anything it makes your dick look bigger, so take that as a win.
2X a week is what I would do compared to 1X. Many are fine with 1X. An advantage with just doing regular injections is you aren’t stuck with 100 mg doses. You may find you feel a lot better at 150 mg/wk than 100 mg/wk for example.