Hello aspirant. You have scored amazingly well and you high chances for getting MBBS seat in government colleges (not the top ones) and also if you receive some reservation privilege then you are sure to get a seat with this much marks. Talking about low budget it's up to you what you believe to be low budget. I. My opinion you must take up best college you can get regardless of the fees and get a student loan. In no time it will be repayed once you get placed.

Regards