I see that you are preferring civil above any other subject. And geotechnical engineering , what I have heard and what my friends told me . 

Civil is one of those branches which doesn't have good scenarios . What I have heard that they have average packages . Some even say that it is the worst when compared to other branches. 

But as civil is oldest so I don't think that the scope would be low. 

What you are chosing is based above your interest. But ask me I would suggest you to go for transportation engineering I think it is better than all other specialisation in civil engineering. But that is my point of view. 

Hope it helps .

Thank you.