Congrates on starting here is a few tips. However as said by others we can't discuss dosages publicly on this board. PM and we can talk about test results and dosages.
Syringe- anything from 1ml to 5ml is fine. Don't go bigger or smaller unless you go for specialized forms of testosterone.
Needle- you need 1 but 2 is better. 18g is great for drawing and nothing bigger then 21g for injecting. You can go as small as 28g but don't wiggle the needle and it will take longer to inject. 1" to 1.5" long will suffice as long as you aren't morbidly obese. Needle can come attached to the syringe or separate. The come in individual packages and need to be bought separately. Many pharmacies have them in stock depending on the gauge.
No idea about you insurance company but most cover HRT for biomen. A lot of guys find that the company doesn't check and it is just covered. Officially my insurance doesn't cover it but all my doc needed to do was write a number on the script.
I am assuming you have a doctor teaching you to do your injections and monitor your health. Your doc needs baseline testing of everything before beginning treatment. You need free and bound testosterone, all the oestrogens and dihydrotestosterone. Sex hormone binding globulin is very useful as well. Lipids, ALT, ALP, AST, kidney function, CBC and a few others. Make sure your doctor does thyroid, adrenal and and clotting tests as well. Don't neglect your health buddy many doctors will prescribe and monitor to keep you away from the black market and unsupervised use.
->-bleeped-<-boy