this might be a bit late if you've already had course councilling but i'll add my input anyway
if physics is your strong suit and you enjoy it, i think you should do it. you're already doing bio 3/4, which is extremely content heavy, and so is psychology. i don't think the subject would be inherently difficult (as many say), but physics is a lot more application and less memorisation so it might provide you with more of a breadth
idk anything about hhd but i just hate health lol
also, you only need english, methods, and chem for monash med (i think?) so do whatever subject you like as your final three. as someone who also aspires to do med too and is doing very similar subjects (methods 3/4, music perf 3/4, bio, chem, spec, lit), it's good to have a subject/s you can rely on academically and know you will enjoy. if you can guarantee physics will provide that for you, then do it. after all, it is your last two years of high school
but it all comes down to what you think
