Going for two degrees is hazarsous.
If you want to become teacher or be in this profession, its highly recommended to become an expert in this domain
You can go with Bsc first following by Msc.
You can then take up B.Ed.
Simultaneously you should start gaining hands on experience in teaching at coaching classes to make up with experience and get great understanding and psychology behind mentoring students.
There are various opportunities at Colleges, Private Institution for such professional.
You can join part Time coaching for students at Mahesh Tutoring for gaining some practical exposure which could come very handy and start monetization of your knowledge and efforts.