hello!
i've found a clinic that will administer my hormone/blocker injections for free, so i'm looking at which injectables i actually would like to use. i'm probably going to go with sustanon  for my actual hormones, but i can't find anything on the types of hormone blockers that are available, and what dosage is recommended for them. so what kinds of hormone blockers do you guys use, and what are the basic facts i should know about them before making my choice?

<NO DOSAGES
ADMIN>

If you are going straight on T then you do not need e blockers. T does it for you.

i'm going on t once i graduate (in june), so i'm going on blockers to make some progress between now and then

That's only two months. If you can do the T now then go on it. Most people do not have a big change in two months. Any voice change can be explained as a cold.

i'm in a weird situation as i'm starting sixth in september, so what i'm planning on doing is starting t in june after taking the blockers (so the t works quicker) as well as vocal training (among other things) so that i'm less recognisable as my current self and i pass better, so i'm not starting t now as i don't want those changes to kick in while i'm at my current school

I'm confused - you're talking about wanting "progress" from going on an E blocker, while not wanting "progress" from going on T? For just a period of 2 months? The (endocrinologically average) feminized body doesn't produce enough T on its own to really do much of anything. AFAIK, going on a blocker isn't actually going to change anything, especially in such a short period of time. Meanwhile, most folks who go on T don't have much to report in the same timeframe. Maybe your voice will begin to drop, but that's not a guarantee by any means. You might wind up with some acne, a little more muscle mass, but most of the changes you're likely to see in 2 months won't be noticeable unless you point them out to someone.

I'd say just start the T and be done with it.