Poeli, do the masters. You won't regret it in the long run.
It won't help you fly a plane but it will help you stand out from the crowd if you look for a non-flying job, in engineering or in another area. It's a sad fact these days that with so many people going to university having a standard undergraduate degree really doesn't count for as much as it used to - get a postgraduate degree, get the masters!!!!!
By the time you finish you'll still be young enough to try flying or engineering, or both. Best of luck.