probably smarter to just buy vials ... most people don't have the skills or equipment to safely homebrew their own vials
either way, weird about your rage ... if I were you, I would be aiming to get a path towards an orchi - monotherapy never seemed to perfectly suppress my testosterone and I pretty much always had gaps where T production happened due to shifts in my hormones (even when my blood estrogen levels remained very high). I didn't really get full relief until my orchi, and for insurance requirements I had to be on supervised HRT for a whole year before I could initiate that.
Not sure you're in the US or what the access to care looks like there, but those are plans I would be making and working towards if possible.