First, thank you for your reply. Unfortunately, there are set of constraints. Since I have a Korea citizenship, I need to finish a military service there, so that I am allowed to either get a job ( in Korea) or to stay here longer in States. This is part of reason that I chose to study more in grad school since it will extend the day of joining army. Furthermore I will have an opportunity to work at engineering or defense company instead of going army if I have a Ph.D. degree.
Secondly, I would like to learn more computational skills as I stay in academia longer. At this point, I don't have much computer background or really know about any computer language. One professor that I talked to does computational research which requires mostly python or C languages, so as I am doing this work I guess it would be pretty beneficial to have a flexibility in my career in the future.
It typically takes 4 years to get a Ph.D since I will be doing computational research and I have an offered full funding for 5 years. In overall, I thought it was a good option for me.
Any thoughts on your mind? Please tell me.
Thanks!