Your age is no problem, its more a question of what your comfortable with and what your aspirations are.
I've worked with some very good first officers that went on to become captains, who came into flying when they were well into their 30's, some were over 40. I would say that the outlook for the next few years doesn't look brilliant in the job market, so keeping current and being persistent with job applications will be key to achieving your desires after training.
Plan on retiring at 55, you might find your too knackered to make 60 or 65.