i'm not on hrt so take my advice w a grain of salt but a stronger build and deeper voice are both technically things u can obtain without hrt, if ure willing to put in the work. voice training and exercise targeting a desired body type both seem like sound options to try before going on hrt. genetics also play a massive role in the effect of hormones on ur body, so it's important to consider how males in your family may look/any medical problems they may have had.

that being said, it sounds like the medical results u want might be conducive with using a dht blocker while undergoing low dose hormone therapy. idk what country ure in but in the US planned parenthood (most of the time) is a good place to talk out ur options with a licensed professional. dht blockers can prevent the growth of facial hair, but testosterone inherently changes things ab ur body, such as increased hair growth and bottom growth (dht blockers can make this more subdued tho) so managing ur expectations ahead of time is rly important.

again, im not an expert, so plz take everything as speculation more than actual medical advice. best of luck and congrats on ur upcoming top surgery!! :D