Dear student,

Choose only the course which you like between these two.
Planning is also a good course and architecture is also a good professional course.
But still in India, architecture has more scope than planning course. So if you want a wide range of job opportunity ahead then you should choose architecture branch, other wise if you want to enhance your problem and thinking abilities, then you can do the planning course. You will only become successful if you choose a branch of your choice.
So, choose wisely.