Delhi

Hello Anshu,
Please Check the college detail for B.Sc agriculture in the link provided:
https://www.shiksha.com/science/colleges/b-sc-agriculture-colleges-delhi-ncr

Please see the facilities provided by us and decide.

1.Noida International University
2.NIMT campus in Greater Noida

Yes, you can get admission in coaching for UPSC preparation.
Top Civil Services Coaching Institutes in Delhi:
Vajiram and Ravi IAS Study Centre.
IAS Era.
Delhi's IAS Study Circle.
Rau's IAS Study Circle.
Shristi Study Circle.
Career Shapers.
Career Point.
Sachdeva New P.T. College.

That's a tough choice. Your grades are good but may not be sufficient for SRCC. Cut-offs are usually 99% and more. It will be wise to decide after the merit lists are drawn. In the meanwhile keep checking more university options abroad.
However, though King's University is reputed, it is not one of the top 10 universities in Canada, on the other hand, SRCC is one of the best in India. You may juggle between options like the University of British Columbia, University of Toronto, Mc Gill University and Simon Fraser. Studying abroad will give you a better global experience but study from a top ranked university only.