I am interested in teaching young kids once I grow older. Might be become a Montessori teacher. How attractive a career option is it?

It is very good that a distinction student like you is interested in teaching. Though the financial returns are not very high at present, they are constantly increasing and in 10-20 years it is quite likely that you will be earning as much as those in corporate world, if you are a very competent teacher, Montessori courses are run by the Indian Montessori Centre in different cities and is of one year duration. Once you take a liking to the field, you can go in the Montessori Directors course and be the Director of a Montessori or start one yourself. There are also many short-term courses in early childhood education that can supplement your skills