i did similar subjects in yr 11 this year, but mainstream english instead of eng lang and 3/4 psych instead of physics.
at the end of the day, i would recommend choosing subjects you are interested in; advice you've probably heard before.
for reference, i was taking 20th century history instead of spesh in semester 1, and quickly realised the subject wasn't really tailored to my interests. since i became so disengaged with the subject, the workload seemed much more strenuous than it really was, and i honestly had no motivation to complete set work.
after picking up spesh in semester 2, although the workload was similar to history (if not more demanding as i was catching up on sem 1 work), i found it so much easier to complete tasks for the subject because i actually enjoyed the content.
spesh and methods also really compliment each other (and I'm sure physics does as well) - i noticed my methods average increased by about 5-10% after picking up spesh. chem and bio also help each other in some aspects too, regarding pieces of terminology, chemical formulas, etc.
i find the overlap between subjects does better my understanding of concepts as you're hearing it multiple times, which helps to
lessen my workload to an extent.
anyways, that's my two cents - i reckon doing subjects you aren't as interested but have less of a workload could be just as demanding as taking 'content heavy' subjects that you are interested in.