As a scientist studying solar flares, I see a lot of exciting work in the future in this field. In particular we are building better instruments to study high-energy aspects of explosive solar events -- meaning flares and coronal mass ejections. These events spit out a huge number of really fast particles, and we use X-rays and gamma rays to study these particles, trying to figure out how they get up to such high speeds.
Another interesting field in solar physics is solar seismology, which is observing the way sound waves bounce around in the Sun's interior to try and determine things about the Sun's structure and about the formation of the waves. There are many more examples of fascinating solar physics topics.
One choice scientists in this field make is whether they would like to work on theory, data analysis, and/or hardware (building instruments). There are many opportunities in all three of these areas, but personally, I really enjoy hardware work. Getting some experience with electronics would be a good start to this kind of work. The nice thing about this is that most hardware work prepares you for a lot of other careers as well. The electronics work I have done is quite similar to work in the field of cameras and medical imaging. And if you choose to become a scientist, understanding how your instruments work is crucial to being able to work with the data.