DW its early days still, you've plenty to time to make your decision. I remember back to the early days in year 10 when i couldn't choose between which subject (either eco or modern coz i did quite well in commerce and history in junior years) to pick for senior school and then i thought which subject i enjoyed more, got better marks in, the workload involved in yrs 11 and 12 and if there was anything in either subject that would help me in the future to whatever uni course i do. In the end, i chose economics and don't regret it at all, but if i were to do 14 units i would definitely pick modern hisytory as my 13th and 14th units. But hey, everyones different, and whatever decision you make, i hope it comes from your heart coz everyones different.