Hi,
If your are asking in terms of studies and your main aim is to become a teacher than I think it does not cost any extra burden for you. B.a is a three years course and integrated b.a bed is a four years course. Practical activities, workshop, lessons etc are the part of b.ed syllabus so you have to do that extra. If one do only b.ed such type of practical are not included in the syllabus.
So in the end it depend on how do you take it mentally. If you want to do simple b.a you can do that. And after completing the course can join b.ed
But if you want to do integrated course you can go ahead it will save your one year of learning .
Hope this helps
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