I'm currently not sure what subjects to choose this year for my HSC. I'm certain that I want to take Economics, 3U Math, 3U English but I'm not sure whether to take Phys, Chem or Modern History. I did quite well in a recent Physics test, in comparison with other peers so I don't know if I should take Physics. I'm pretty interested in Modern History but my current marks are pretty average, nothing special. I also just started this term to look at Chemistry and I'm not sure if I should take Chem. My main concern is if taking 2 sciences is too demanding, as a science requires a depth study. Any advice?