Hansraj College, University of Delhi

The admissions are closed for the Diploma courses now. You can contact the authorities once but according to the below link, you can check the details and final list of the students.
http://www.hansrajcollege.ac.in/announcements.php

The final list has been updated. I don't think there will be further admission now. Visit the below link:
http://www.hansrajcollege.ac.in/announcements.php
And you can contact the college authorities if there is any chance.

According to me, it is around 91% as per the last year's cutoffs but you can enquire the university if there is any vacant seat.

Delhi University is surely best and being a student from HRC, I will suggest it is a good college and I don't have much information about studies at St. Xaviers College. There are other plenty better fields out there in which you can do your graduation and make a beautiful career.

It all depends on your choice. But Hansraj is the best. It is one of the finest colleges of Delhi University. Delhi University is on the top in providing more than 30 undergraduate courses.
Many personalities belong to this college. Hansraj has the best faculty members for B.Com course. It has experienced faculty members. The fee is very minimal. Many companies visit this college regarding placement. It has its own hostel.
In every way, Hansraj is the best option.

I am not sure if the college offers a Spanish language course separately, but you can call the college and confirm. I will just share the number for you their number:
+91-11-27667747

The language courses run parallel to these admissions, some of them start applications early or as late as August. You would have to go and check with the colleges and take the form. You need to contact the colleges concerned for the same.

The hostel will cost you approximately 80k per year while the college fee is nearly 19k per year.

No, merit-based admission is only for the students who had pursued their graduation from DU. For others, the entrance test is conducted.

English honors in Hansraj College require a percentage well above 90%. I don't think, you could get into it with this percentage.