You have chosen fine combination of subjects. Only issue maybe with Physics which had a passing percentage of only 40% in 2016. If you think you can achieve higher numbers in it than go ahead. Have a look at its past papers.

I also did a full time 9 hours job but still managed to take out 8 hours daily for my studies. I would recommend you the same. You may manage your schedule accordingly.

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There can be no positive result through negative attitude. Think positive. Live positive.