LLB

Yes, it does provide 5-year BA LLB course.

Your rank is quite decent, so be hopeful. Keep an eye on the vacancies. Please check out on the link:
http://www.osmania.ac.in/lawcollege/courses.html

Your class 12th marks have least impact on your placements. All that would matter is your CV, grades and work ethics.

Kindly check the following link:
https://www.google.co.in/search?q=ts+cet&oq=ts+cet&aqs=chrome.69i57j0l5.4300j0j7&sourceid=chrome&ie=UTF-8#q=ts+lawcet

Your placements depend on your grades, CV and work ethics. Faculty is pretty good in almost all the NLUs and also in the private institutions, like Symbiosis, Amity, SRM, UPES, etc.

Actually, both of them have a great brand name, Symbiosis and NMIMS both will give you great course and brand value but I would recommend you to go for NMIMS just because it's in Mumbai which will give you great job opportunities compared to Pune.

Hi,
There are various colleges that offer LLB with a cut off for 40%. You can try KLE Society's law college at Bangalore that has a cut-off for 45% for LLB. I think you can make it as you're almost close to it. Good luck, hope this helped!

You can refer the below link for college comparison: https://www.shiksha.com/resources/college-comparison-228042-152335

PLACEMENT -Placement and job offer depends upon the course you are pursuing but it applied for any institute. For example, if you have done BCA from there then placement offer will be ok. But once you completed your master like MCA from there, there will be plenty of offers for you.
INTERNSHIP -Yes, they provide internship for different courses based on your academic performance internship is provided to you. Stipend depends on the course you are studying like there were some friends of me from law department who got decent stipend during their internship.