As long as you have a reasonable plan for further employable study afterwards, and don't expect to magically get a dream job straight out of a science degree, I'd go for the one you think you'll enjoy. The short-term gain (temporary stress relief and larger income sooner) is really, really not worth years of ongoing stress. You'll also probably perform more poorly in a degree if you're less motivated or feel pushed into it, and be less competitive for a job afterwards.
Meanwhile, you can focus on trying to get as much paid work as you reasonably can during your degree. It won't make you as much money as a FT job after uni will, but you'll show your parents that you're working towards their goal, you can have a bit more financial independence and/or pay 'rent', and it'll improve your graduate job prospects.
Also, why do you think your parents are pushing you? Do they think that getting a job sooner equals greater success, or are they struggling to support you financially? You may be able to find a different way to help address their specific concerns.