B.Ed

Currently, there is no ranking available for this course. But considering the reputation of the college, the course is pretty good.

Yes the course duration is 1-year.
For details visit: https://www.shiksha.com/teaching-education/course/b-ed-regular-doon-valley-group-of-institutes-karnal-187479.

Yes, you can get the admission for B.Ed as you have completed MA (English).
Any person having graduation or post-graduation in any stream is eligible to take admission to B.Ed. It will help you later on in your promotion & you can work as a PGT.

For B.Ed, you need to apply online in the month of May. The admission is through entrance test.
On the basis of performance in admission test, UP Rajarshi Tandon Open University offers admission in B.Ed course.

In order to pursue B.Ed course in Hindi, the applicant should have completed his/her graduation or post-graduation in Hindi from a recognized university with 50% minimum.

You can pursue B.Ed through distance education but you need to have at least 2 years of work experience. But before choosing any university do check the eligibility criteria.

You can apply for B.Ed in lots of private universities in Pune.

NCTE approved universities are:
Himachal Pradesh University (Shimla)
Maharshi Dayanand University (Rohtak) Punjabi University (Patiala) Kurukshetra University (Kurukshetra)
Kota Open University, Rajasthan
Yashwantrao Chavan Maharashtra Open University, Maharashtra
Karnataka State Open University (Bangalore)
Indira Gandhi National Open University (IGNOU) (New Delhi)

What do you mean by M.Sc getting extended for 1 year?
Pursuing B.Ed in the same year would not be possible.