I know you are in Melbourne and I'm in Adelaide but it is similar. Once you have completed the assessment with the psych and get the referral to an endocrinologist or GP who is going to monitor your HRT you have a conversation with them, medical history, allergies, health issues, what medications you are on, maybe a physical examination which may include a look at the junk etc. Then usually a blood draw to monitor your baseline biochemistry then a script for HRT. Depending upon the medic that may be a blocker first or oestrogen first. It doesn't make much difference in the long run. Oestrogen will block T production anyway and often the medic wants to see how much blocking you get before adding an anti androgen into the mix. What sort of oestrogen? In Australia usually a pill first (Progynova) as the dose is easy to manipulate, then on to injections or patches or implants depending on the medic and the availability.
Usually go back after a month or so for another examination and blood test, then see them as need be for a new script and assessment. It is all very easy, remember to ask as many questions about how you take your HRT, side effects etc, time for changes, things to look out for, anything! The medics treating TG people in Melbourne are very experienced and more questions the easier.
Hey and fasten the seat belt, put the shades on and get ready for the ride of your life!!!